Finding the Fourth Proportional to 1,142.89, 1,713.75 and 526.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.89 : 1,713.75 = 526.06 : x
2. Step 2: Convert to fraction form
   1,142.89/1,713.75 = 526.06/x
3. Step 3: Cross multiply
   1,142.89x = 1,713.75 × 526.06
4. Step 4: Simplify right side
   1,142.89x = 901,535.33
5. Step 5: Solve for x
   x = 901,535.33/1,142.89
6. Step 6: Final answer
   x = 788.82