Finding the Fourth Proportional to 1,821.57, 2,513.99 and 1,764.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.57 : 2,513.99 = 1,764.17 : x
2. Step 2: Convert to fraction form
   1,821.57/2,513.99 = 1,764.17/x
3. Step 3: Cross multiply
   1,821.57x = 2,513.99 × 1,764.17
4. Step 4: Simplify right side
   1,821.57x = 4,435,084.35
5. Step 5: Solve for x
   x = 4,435,084.35/1,821.57
6. Step 6: Final answer
   x = 2,434.76