Finding the Fourth Proportional to 1,432.10, 1,976.31 and 934.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.10 : 1,976.31 = 934.45 : x
2. Step 2: Convert to fraction form
   1,432.10/1,976.31 = 934.45/x
3. Step 3: Cross multiply
   1,432.10x = 1,976.31 × 934.45
4. Step 4: Simplify right side
   1,432.10x = 1,846,763.40
5. Step 5: Solve for x
   x = 1,846,763.40/1,432.10
6. Step 6: Final answer
   x = 1,289.55