Finding the Fourth Proportional to 1,061.94, 1,465.80 and 688.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.94 : 1,465.80 = 688.96 : x
2. Step 2: Convert to fraction form
   1,061.94/1,465.80 = 688.96/x
3. Step 3: Cross multiply
   1,061.94x = 1,465.80 × 688.96
4. Step 4: Simplify right side
   1,061.94x = 1,009,868.57
5. Step 5: Solve for x
   x = 1,009,868.57/1,061.94
6. Step 6: Final answer
   x = 950.96