Finding the Fourth Proportional to 1,342.40, 1,850.72 and 1,135.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.40 : 1,850.72 = 1,135.04 : x
2. Step 2: Convert to fraction form
   1,342.40/1,850.72 = 1,135.04/x
3. Step 3: Cross multiply
   1,342.40x = 1,850.72 × 1,135.04
4. Step 4: Simplify right side
   1,342.40x = 2,100,641.23
5. Step 5: Solve for x
   x = 2,100,641.23/1,342.40
6. Step 6: Final answer
   x = 1,564.84