Finding the Fourth Proportional to 1,353.55, 1,868.77 and 1,105.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.55 : 1,868.77 = 1,105.47 : x
2. Step 2: Convert to fraction form
   1,353.55/1,868.77 = 1,105.47/x
3. Step 3: Cross multiply
   1,353.55x = 1,868.77 × 1,105.47
4. Step 4: Simplify right side
   1,353.55x = 2,065,857.06
5. Step 5: Solve for x
   x = 2,065,857.06/1,353.55
6. Step 6: Final answer
   x = 1,526.25