Finding the Fourth Proportional to 1,143.83, 1,577.90 and 723.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.83 : 1,577.90 = 723.47 : x
2. Step 2: Convert to fraction form
   1,143.83/1,577.90 = 723.47/x
3. Step 3: Cross multiply
   1,143.83x = 1,577.90 × 723.47
4. Step 4: Simplify right side
   1,143.83x = 1,141,563.31
5. Step 5: Solve for x
   x = 1,141,563.31/1,143.83
6. Step 6: Final answer
   x = 998.02