Finding the Fourth Proportional to 1,513.12, 2,266.72 and 1,235.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.12 : 2,266.72 = 1,235.82 : x
2. Step 2: Convert to fraction form
   1,513.12/2,266.72 = 1,235.82/x
3. Step 3: Cross multiply
   1,513.12x = 2,266.72 × 1,235.82
4. Step 4: Simplify right side
   1,513.12x = 2,801,257.91
5. Step 5: Solve for x
   x = 2,801,257.91/1,513.12
6. Step 6: Final answer
   x = 1,851.31