Finding the Fourth Proportional to 1,143.50, 1,577.61 and 922.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.50 : 1,577.61 = 922.37 : x
2. Step 2: Convert to fraction form
   1,143.50/1,577.61 = 922.37/x
3. Step 3: Cross multiply
   1,143.50x = 1,577.61 × 922.37
4. Step 4: Simplify right side
   1,143.50x = 1,455,132.25
5. Step 5: Solve for x
   x = 1,455,132.25/1,143.50
6. Step 6: Final answer
   x = 1,272.53