Finding the Fourth Proportional to 2,551.18, 3,520.72 and 1,432.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.18 : 3,520.72 = 1,432.12 : x
2. Step 2: Convert to fraction form
   2,551.18/3,520.72 = 1,432.12/x
3. Step 3: Cross multiply
   2,551.18x = 3,520.72 × 1,432.12
4. Step 4: Simplify right side
   2,551.18x = 5,042,093.53
5. Step 5: Solve for x
   x = 5,042,093.53/2,551.18
6. Step 6: Final answer
   x = 1,976.38