Finding the Fourth Proportional to 1,061.87, 1,465.88 and 708.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.87 : 1,465.88 = 708.38 : x
2. Step 2: Convert to fraction form
   1,061.87/1,465.88 = 708.38/x
3. Step 3: Cross multiply
   1,061.87x = 1,465.88 × 708.38
4. Step 4: Simplify right side
   1,061.87x = 1,038,396.53
5. Step 5: Solve for x
   x = 1,038,396.53/1,061.87
6. Step 6: Final answer
   x = 977.89