Finding the Fourth Proportional to 1,002.96, 1,507.51 and 981.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.96 : 1,507.51 = 981.43 : x
2. Step 2: Convert to fraction form
   1,002.96/1,507.51 = 981.43/x
3. Step 3: Cross multiply
   1,002.96x = 1,507.51 × 981.43
4. Step 4: Simplify right side
   1,002.96x = 1,479,515.12
5. Step 5: Solve for x
   x = 1,479,515.12/1,002.96
6. Step 6: Final answer
   x = 1,475.15