Finding the Fourth Proportional to 2,053.60, 2,831.04 and 1,267.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,053.60 : 2,831.04 = 1,267.20 : x
2. Step 2: Convert to fraction form
   2,053.60/2,831.04 = 1,267.20/x
3. Step 3: Cross multiply
   2,053.60x = 2,831.04 × 1,267.20
4. Step 4: Simplify right side
   2,053.60x = 3,587,493.89
5. Step 5: Solve for x
   x = 3,587,493.89/2,053.60
6. Step 6: Final answer
   x = 1,746.93