Finding the Fourth Proportional to 3,432.16, 5,147.52 and 1,123.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,432.16 : 5,147.52 = 1,123.12 : x
2. Step 2: Convert to fraction form
   3,432.16/5,147.52 = 1,123.12/x
3. Step 3: Cross multiply
   3,432.16x = 5,147.52 × 1,123.12
4. Step 4: Simplify right side
   3,432.16x = 5,781,282.66
5. Step 5: Solve for x
   x = 5,781,282.66/3,432.16
6. Step 6: Final answer
   x = 1,684.44