Finding the Fourth Proportional to 1,821.07, 2,510.52 and 1,540.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.07 : 2,510.52 = 1,540.17 : x
2. Step 2: Convert to fraction form
   1,821.07/2,510.52 = 1,540.17/x
3. Step 3: Cross multiply
   1,821.07x = 2,510.52 × 1,540.17
4. Step 4: Simplify right side
   1,821.07x = 3,866,627.59
5. Step 5: Solve for x
   x = 3,866,627.59/1,821.07
6. Step 6: Final answer
   x = 2,123.27