Finding the Fourth Proportional to 1,854, 2,557.82 and 1,224.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854 : 2,557.82 = 1,224.83 : x
2. Step 2: Convert to fraction form
   1,854/2,557.82 = 1,224.83/x
3. Step 3: Cross multiply
   1,854x = 2,557.82 × 1,224.83
4. Step 4: Simplify right side
   1,854x = 3,132,875.76
5. Step 5: Solve for x
   x = 3,132,875.76/1,854
6. Step 6: Final answer
   x = 1,689.79