Finding the Fourth Proportional to 1,061.26, 1,465.06 and 707.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.26 : 1,465.06 = 707.78 : x
2. Step 2: Convert to fraction form
   1,061.26/1,465.06 = 707.78/x
3. Step 3: Cross multiply
   1,061.26x = 1,465.06 × 707.78
4. Step 4: Simplify right side
   1,061.26x = 1,036,940.17
5. Step 5: Solve for x
   x = 1,036,940.17/1,061.26
6. Step 6: Final answer
   x = 977.08