Finding the Fourth Proportional to 1,672.62, 2,308.59 and 1,083.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.62 : 2,308.59 = 1,083.30 : x
2. Step 2: Convert to fraction form
   1,672.62/2,308.59 = 1,083.30/x
3. Step 3: Cross multiply
   1,672.62x = 2,308.59 × 1,083.30
4. Step 4: Simplify right side
   1,672.62x = 2,500,895.55
5. Step 5: Solve for x
   x = 2,500,895.55/1,672.62
6. Step 6: Final answer
   x = 1,495.20