Finding the Fourth Proportional to 1,342.47, 1,852.80 and 753.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.47 : 1,852.80 = 753.05 : x
2. Step 2: Convert to fraction form
   1,342.47/1,852.80 = 753.05/x
3. Step 3: Cross multiply
   1,342.47x = 1,852.80 × 753.05
4. Step 4: Simplify right side
   1,342.47x = 1,395,244.54
5. Step 5: Solve for x
   x = 1,395,244.54/1,342.47
6. Step 6: Final answer
   x = 1,039.31