Finding the Fourth Proportional to 1,478.72, 2,040.02 and 981.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.72 : 2,040.02 = 981.63 : x
2. Step 2: Convert to fraction form
   1,478.72/2,040.02 = 981.63/x
3. Step 3: Cross multiply
   1,478.72x = 2,040.02 × 981.63
4. Step 4: Simplify right side
   1,478.72x = 2,002,543.61
5. Step 5: Solve for x
   x = 2,002,543.61/1,478.72
6. Step 6: Final answer
   x = 1,354.24