Finding the Fourth Proportional to 2,513.71, 3,769.17 and 1,128.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.71 : 3,769.17 = 1,128.37 : x
2. Step 2: Convert to fraction form
   2,513.71/3,769.17 = 1,128.37/x
3. Step 3: Cross multiply
   2,513.71x = 3,769.17 × 1,128.37
4. Step 4: Simplify right side
   2,513.71x = 4,253,012.71
5. Step 5: Solve for x
   x = 4,253,012.71/2,513.71
6. Step 6: Final answer
   x = 1,691.93