Finding the Fourth Proportional to 1,243,160.06, 1,715,438.33 and 699,284.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,160.06 : 1,715,438.33 = 699,284.15 : x
2. Step 2: Convert to fraction form
   1,243,160.06/1,715,438.33 = 699,284.15/x
3. Step 3: Cross multiply
   1,243,160.06x = 1,715,438.33 × 699,284.15
4. Step 4: Simplify right side
   1,243,160.06x = 1,199,578,822,397.86
5. Step 5: Solve for x
   x = 1,199,578,822,397.86/1,243,160.06
6. Step 6: Final answer
   x = 964,943.18