Finding the Fourth Proportional to 1,781.17, 2,672.10 and 740.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781.17 : 2,672.10 = 740.61 : x
2. Step 2: Convert to fraction form
   1,781.17/2,672.10 = 740.61/x
3. Step 3: Cross multiply
   1,781.17x = 2,672.10 × 740.61
4. Step 4: Simplify right side
   1,781.17x = 1,978,980.28
5. Step 5: Solve for x
   x = 1,978,980.28/1,781.17
6. Step 6: Final answer
   x = 1,111.06