Finding the Fourth Proportional to 1,766.78, 2,438.63 and 1,103.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.78 : 2,438.63 = 1,103.23 : x
2. Step 2: Convert to fraction form
   1,766.78/2,438.63 = 1,103.23/x
3. Step 3: Cross multiply
   1,766.78x = 2,438.63 × 1,103.23
4. Step 4: Simplify right side
   1,766.78x = 2,690,369.77
5. Step 5: Solve for x
   x = 2,690,369.77/1,766.78
6. Step 6: Final answer
   x = 1,522.75