Finding the Fourth Proportional to 1,141.89, 1,574.98 and 1,103.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.89 : 1,574.98 = 1,103.79 : x
2. Step 2: Convert to fraction form
   1,141.89/1,574.98 = 1,103.79/x
3. Step 3: Cross multiply
   1,141.89x = 1,574.98 × 1,103.79
4. Step 4: Simplify right side
   1,141.89x = 1,738,447.17
5. Step 5: Solve for x
   x = 1,738,447.17/1,141.89
6. Step 6: Final answer
   x = 1,522.43