Finding the Fourth Proportional to 1,761.42, 2,642.18 and 528.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,761.42 : 2,642.18 = 528.86 : x
2. Step 2: Convert to fraction form
   1,761.42/2,642.18 = 528.86/x
3. Step 3: Cross multiply
   1,761.42x = 2,642.18 × 528.86
4. Step 4: Simplify right side
   1,761.42x = 1,397,343.31
5. Step 5: Solve for x
   x = 1,397,343.31/1,761.42
6. Step 6: Final answer
   x = 793.31