Finding the Fourth Proportional to 2,171.60, 3,256.44 and 632.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.60 : 3,256.44 = 632.72 : x
2. Step 2: Convert to fraction form
   2,171.60/3,256.44 = 632.72/x
3. Step 3: Cross multiply
   2,171.60x = 3,256.44 × 632.72
4. Step 4: Simplify right side
   2,171.60x = 2,060,414.72
5. Step 5: Solve for x
   x = 2,060,414.72/2,171.60
6. Step 6: Final answer
   x = 948.80