Finding the Fourth Proportional to 1,143.81, 1,714.42 and 526.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.81 : 1,714.42 = 526.24 : x
2. Step 2: Convert to fraction form
   1,143.81/1,714.42 = 526.24/x
3. Step 3: Cross multiply
   1,143.81x = 1,714.42 × 526.24
4. Step 4: Simplify right side
   1,143.81x = 902,196.38
5. Step 5: Solve for x
   x = 902,196.38/1,143.81
6. Step 6: Final answer
   x = 788.76