Finding the Fourth Proportional to 1,142.32, 1,711.42 and 526.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.32 : 1,711.42 = 526.54 : x
2. Step 2: Convert to fraction form
   1,142.32/1,711.42 = 526.54/x
3. Step 3: Cross multiply
   1,142.32x = 1,711.42 × 526.54
4. Step 4: Simplify right side
   1,142.32x = 901,131.09
5. Step 5: Solve for x
   x = 901,131.09/1,142.32
6. Step 6: Final answer
   x = 788.86