Finding the Fourth Proportional to 1,093.31, 1,640.64 and 632

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.31 : 1,640.64 = 632 : x
2. Step 2: Convert to fraction form
   1,093.31/1,640.64 = 632/x
3. Step 3: Cross multiply
   1,093.31x = 1,640.64 × 632
4. Step 4: Simplify right side
   1,093.31x = 1,036,884.48
5. Step 5: Solve for x
   x = 1,036,884.48/1,093.31
6. Step 6: Final answer
   x = 948.39