Finding the Fourth Proportional to 1,844.78, 2,764.79 and 748.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,844.78 : 2,764.79 = 748.55 : x
2. Step 2: Convert to fraction form
   1,844.78/2,764.79 = 748.55/x
3. Step 3: Cross multiply
   1,844.78x = 2,764.79 × 748.55
4. Step 4: Simplify right side
   1,844.78x = 2,069,586.72
5. Step 5: Solve for x
   x = 2,069,586.72/1,844.78
6. Step 6: Final answer
   x = 1,121.86