Finding the Fourth Proportional to 1,665.48, 2,294.28 and 1,272.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.48 : 2,294.28 = 1,272.36 : x
2. Step 2: Convert to fraction form
   1,665.48/2,294.28 = 1,272.36/x
3. Step 3: Cross multiply
   1,665.48x = 2,294.28 × 1,272.36
4. Step 4: Simplify right side
   1,665.48x = 2,919,150.10
5. Step 5: Solve for x
   x = 2,919,150.10/1,665.48
6. Step 6: Final answer
   x = 1,752.74