Finding the Fourth Proportional to 1,342.67, 1,853.06 and 753.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.67 : 1,853.06 = 753.21 : x
2. Step 2: Convert to fraction form
   1,342.67/1,853.06 = 753.21/x
3. Step 3: Cross multiply
   1,342.67x = 1,853.06 × 753.21
4. Step 4: Simplify right side
   1,342.67x = 1,395,730.70
5. Step 5: Solve for x
   x = 1,395,730.70/1,342.67
6. Step 6: Final answer
   x = 1,039.52