Finding the Fourth Proportional to 1,234.23, 1,851.72 and 740.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,234.23 : 1,851.72 = 740.55 : x
2. Step 2: Convert to fraction form
   1,234.23/1,851.72 = 740.55/x
3. Step 3: Cross multiply
   1,234.23x = 1,851.72 × 740.55
4. Step 4: Simplify right side
   1,234.23x = 1,371,291.25
5. Step 5: Solve for x
   x = 1,371,291.25/1,234.23
6. Step 6: Final answer
   x = 1,111.05