Finding the Fourth Proportional to 1,665.41, 2,499.63 and 740.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.41 : 2,499.63 = 740.79 : x
2. Step 2: Convert to fraction form
   1,665.41/2,499.63 = 740.79/x
3. Step 3: Cross multiply
   1,665.41x = 2,499.63 × 740.79
4. Step 4: Simplify right side
   1,665.41x = 1,851,707.16
5. Step 5: Solve for x
   x = 1,851,707.16/1,665.41
6. Step 6: Final answer
   x = 1,111.86