Finding the Fourth Proportional to 1,632.72, 2,442.96 and 972.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,632.72 : 2,442.96 = 972.18 : x
2. Step 2: Convert to fraction form
   1,632.72/2,442.96 = 972.18/x
3. Step 3: Cross multiply
   1,632.72x = 2,442.96 × 972.18
4. Step 4: Simplify right side
   1,632.72x = 2,374,996.85
5. Step 5: Solve for x
   x = 2,374,996.85/1,632.72
6. Step 6: Final answer
   x = 1,454.63