Finding the Fourth Proportional to 1,673.73, 2,309.82 and 1,113.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.73 : 2,309.82 = 1,113.30 : x
2. Step 2: Convert to fraction form
   1,673.73/2,309.82 = 1,113.30/x
3. Step 3: Cross multiply
   1,673.73x = 2,309.82 × 1,113.30
4. Step 4: Simplify right side
   1,673.73x = 2,571,522.61
5. Step 5: Solve for x
   x = 2,571,522.61/1,673.73
6. Step 6: Final answer
   x = 1,536.40