Finding the Fourth Proportional to 1,251.60, 1,723.86 and 1,085.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251.60 : 1,723.86 = 1,085.82 : x
2. Step 2: Convert to fraction form
   1,251.60/1,723.86 = 1,085.82/x
3. Step 3: Cross multiply
   1,251.60x = 1,723.86 × 1,085.82
4. Step 4: Simplify right side
   1,251.60x = 1,871,801.67
5. Step 5: Solve for x
   x = 1,871,801.67/1,251.60
6. Step 6: Final answer
   x = 1,495.53