Finding the Fourth Proportional to 1,499,340, 2,249,012.16 and 612,876

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,340 : 2,249,012.16 = 612,876 : x
2. Step 2: Convert to fraction form
   1,499,340/2,249,012.16 = 612,876/x
3. Step 3: Cross multiply
   1,499,340x = 2,249,012.16 × 612,876
4. Step 4: Simplify right side
   1,499,340x = 1,378,365,576,572.16
5. Step 5: Solve for x
   x = 1,378,365,576,572.16/1,499,340
6. Step 6: Final answer
   x = 919,314.88