Finding the Fourth Proportional to 1,631.33, 2,250.86 and 1,101.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,631.33 : 2,250.86 = 1,101.20 : x
2. Step 2: Convert to fraction form
   1,631.33/2,250.86 = 1,101.20/x
3. Step 3: Cross multiply
   1,631.33x = 2,250.86 × 1,101.20
4. Step 4: Simplify right side
   1,631.33x = 2,478,630.27
5. Step 5: Solve for x
   x = 2,478,630.27/1,631.33
6. Step 6: Final answer
   x = 1,519.39