Finding the Fourth Proportional to 1,249,290,338.56, 1,724,020,830.72 and 692,409,338.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,249,290,338.56 : 1,724,020,830.72 = 692,409,338.88 : x
2. Step 2: Convert to fraction form
   1,249,290,338.56/1,724,020,830.72 = 692,409,338.88/x
3. Step 3: Cross multiply
   1,249,290,338.56x = 1,724,020,830.72 × 692,409,338.88
4. Step 4: Simplify right side
   1,249,290,338.56x = 1,193,728,123,614,183,680
5. Step 5: Solve for x
   x = 1,193,728,123,614,183,680/1,249,290,338.56
6. Step 6: Final answer
   x = 955,524,978.28