Finding the Fourth Proportional to 1,224,830.96, 1,690,406.52 and 681,020.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224,830.96 : 1,690,406.52 = 681,020.72 : x
2. Step 2: Convert to fraction form
   1,224,830.96/1,690,406.52 = 681,020.72/x
3. Step 3: Cross multiply
   1,224,830.96x = 1,690,406.52 × 681,020.72
4. Step 4: Simplify right side
   1,224,830.96x = 1,151,201,865,343.09
5. Step 5: Solve for x
   x = 1,151,201,865,343.09/1,224,830.96
6. Step 6: Final answer
   x = 939,886.32