Finding the Fourth Proportional to 2,151.32, 3,224.14 and 981.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.32 : 3,224.14 = 981.47 : x
2. Step 2: Convert to fraction form
   2,151.32/3,224.14 = 981.47/x
3. Step 3: Cross multiply
   2,151.32x = 3,224.14 × 981.47
4. Step 4: Simplify right side
   2,151.32x = 3,164,402.29
5. Step 5: Solve for x
   x = 3,164,402.29/2,151.32
6. Step 6: Final answer
   x = 1,470.92