Finding the Fourth Proportional to 1,167,815.31, 1,611,310.01 and 708,918.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167,815.31 : 1,611,310.01 = 708,918.72 : x
2. Step 2: Convert to fraction form
   1,167,815.31/1,611,310.01 = 708,918.72/x
3. Step 3: Cross multiply
   1,167,815.31x = 1,611,310.01 × 708,918.72
4. Step 4: Simplify right side
   1,167,815.31x = 1,142,287,829,812.39
5. Step 5: Solve for x
   x = 1,142,287,829,812.39/1,167,815.31
6. Step 6: Final answer
   x = 978,140.82