Finding the Fourth Proportional to 1,665.21, 2,496.66 and 740.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.21 : 2,496.66 = 740.28 : x
2. Step 2: Convert to fraction form
   1,665.21/2,496.66 = 740.28/x
3. Step 3: Cross multiply
   1,665.21x = 2,496.66 × 740.28
4. Step 4: Simplify right side
   1,665.21x = 1,848,227.46
5. Step 5: Solve for x
   x = 1,848,227.46/1,665.21
6. Step 6: Final answer
   x = 1,109.91