Finding the Fourth Proportional to 1,335.48, 1,839.12 and 1,331.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.48 : 1,839.12 = 1,331.42 : x
2. Step 2: Convert to fraction form
   1,335.48/1,839.12 = 1,331.42/x
3. Step 3: Cross multiply
   1,335.48x = 1,839.12 × 1,331.42
4. Step 4: Simplify right side
   1,335.48x = 2,448,641.15
5. Step 5: Solve for x
   x = 2,448,641.15/1,335.48
6. Step 6: Final answer
   x = 1,833.53