Finding the Fourth Proportional to 1,291.38, 1,935.72 and 632.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291.38 : 1,935.72 = 632.35 : x
2. Step 2: Convert to fraction form
   1,291.38/1,935.72 = 632.35/x
3. Step 3: Cross multiply
   1,291.38x = 1,935.72 × 632.35
4. Step 4: Simplify right side
   1,291.38x = 1,224,052.54
5. Step 5: Solve for x
   x = 1,224,052.54/1,291.38
6. Step 6: Final answer
   x = 947.86