Finding the Fourth Proportional to 1,365.59, 1,881.23 and 1,085.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.59 : 1,881.23 = 1,085.74 : x
2. Step 2: Convert to fraction form
   1,365.59/1,881.23 = 1,085.74/x
3. Step 3: Cross multiply
   1,365.59x = 1,881.23 × 1,085.74
4. Step 4: Simplify right side
   1,365.59x = 2,042,516.53
5. Step 5: Solve for x
   x = 2,042,516.53/1,365.59
6. Step 6: Final answer
   x = 1,495.70