Finding the Fourth Proportional to 1,511.48, 2,265.83 and 1,121.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.48 : 2,265.83 = 1,121.00 : x
2. Step 2: Convert to fraction form
   1,511.48/2,265.83 = 1,121.00/x
3. Step 3: Cross multiply
   1,511.48x = 2,265.83 × 1,121.00
4. Step 4: Simplify right side
   1,511.48x = 2,540,003.90
5. Step 5: Solve for x
   x = 2,540,003.90/1,511.48
6. Step 6: Final answer
   x = 1,680.48