Finding the Fourth Proportional to 1,143.50, 1,576.88 and 1,017.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.50 : 1,576.88 = 1,017.07 : x
2. Step 2: Convert to fraction form
   1,143.50/1,576.88 = 1,017.07/x
3. Step 3: Cross multiply
   1,143.50x = 1,576.88 × 1,017.07
4. Step 4: Simplify right side
   1,143.50x = 1,603,795.78
5. Step 5: Solve for x
   x = 1,603,795.78/1,143.50
6. Step 6: Final answer
   x = 1,402.53