Finding the Fourth Proportional to 1,142.72, 1,714.56 and 526.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.72 : 1,714.56 = 526.48 : x
2. Step 2: Convert to fraction form
   1,142.72/1,714.56 = 526.48/x
3. Step 3: Cross multiply
   1,142.72x = 1,714.56 × 526.48
4. Step 4: Simplify right side
   1,142.72x = 902,681.55
5. Step 5: Solve for x
   x = 902,681.55/1,142.72
6. Step 6: Final answer
   x = 789.94