Finding the Fourth Proportional to 1,365.18, 1,881.96 and 1,085.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.18 : 1,881.96 = 1,085.53 : x
2. Step 2: Convert to fraction form
   1,365.18/1,881.96 = 1,085.53/x
3. Step 3: Cross multiply
   1,365.18x = 1,881.96 × 1,085.53
4. Step 4: Simplify right side
   1,365.18x = 2,042,924.04
5. Step 5: Solve for x
   x = 2,042,924.04/1,365.18
6. Step 6: Final answer
   x = 1,496.45