Finding the Fourth Proportional to 1,002.76, 1,503.12 and 656.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.76 : 1,503.12 = 656.32 : x
2. Step 2: Convert to fraction form
   1,002.76/1,503.12 = 656.32/x
3. Step 3: Cross multiply
   1,002.76x = 1,503.12 × 656.32
4. Step 4: Simplify right side
   1,002.76x = 986,527.72
5. Step 5: Solve for x
   x = 986,527.72/1,002.76
6. Step 6: Final answer
   x = 983.81