Finding the Fourth Proportional to 1,605.88, 2,405.57 and 834.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.88 : 2,405.57 = 834.76 : x
2. Step 2: Convert to fraction form
   1,605.88/2,405.57 = 834.76/x
3. Step 3: Cross multiply
   1,605.88x = 2,405.57 × 834.76
4. Step 4: Simplify right side
   1,605.88x = 2,008,073.61
5. Step 5: Solve for x
   x = 2,008,073.61/1,605.88
6. Step 6: Final answer
   x = 1,250.45