Finding the Fourth Proportional to 1,357.38, 1,871.15 and 832.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.38 : 1,871.15 = 832.50 : x
2. Step 2: Convert to fraction form
   1,357.38/1,871.15 = 832.50/x
3. Step 3: Cross multiply
   1,357.38x = 1,871.15 × 832.50
4. Step 4: Simplify right side
   1,357.38x = 1,557,728.21
5. Step 5: Solve for x
   x = 1,557,728.21/1,357.38
6. Step 6: Final answer
   x = 1,147.60