Finding the Fourth Proportional to 1,342.89, 1,853.16 and 753.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.89 : 1,853.16 = 753.60 : x
2. Step 2: Convert to fraction form
   1,342.89/1,853.16 = 753.60/x
3. Step 3: Cross multiply
   1,342.89x = 1,853.16 × 753.60
4. Step 4: Simplify right side
   1,342.89x = 1,396,541.38
5. Step 5: Solve for x
   x = 1,396,541.38/1,342.89
6. Step 6: Final answer
   x = 1,039.95