Finding the Fourth Proportional to 1,077.48, 1,615.46 and 529.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.48 : 1,615.46 = 529.31 : x
2. Step 2: Convert to fraction form
   1,077.48/1,615.46 = 529.31/x
3. Step 3: Cross multiply
   1,077.48x = 1,615.46 × 529.31
4. Step 4: Simplify right side
   1,077.48x = 855,080.52
5. Step 5: Solve for x
   x = 855,080.52/1,077.48
6. Step 6: Final answer
   x = 793.59