Finding the Fourth Proportional to 1,869.57, 2,579.72 and 1,083.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869.57 : 2,579.72 = 1,083.47 : x
2. Step 2: Convert to fraction form
   1,869.57/2,579.72 = 1,083.47/x
3. Step 3: Cross multiply
   1,869.57x = 2,579.72 × 1,083.47
4. Step 4: Simplify right side
   1,869.57x = 2,795,030.91
5. Step 5: Solve for x
   x = 2,795,030.91/1,869.57
6. Step 6: Final answer
   x = 1,495.01