Finding the Fourth Proportional to 2,085.18, 2,877.32 and 1,246.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.18 : 2,877.32 = 1,246.05 : x
2. Step 2: Convert to fraction form
   2,085.18/2,877.32 = 1,246.05/x
3. Step 3: Cross multiply
   2,085.18x = 2,877.32 × 1,246.05
4. Step 4: Simplify right side
   2,085.18x = 3,585,287.70
5. Step 5: Solve for x
   x = 3,585,287.70/2,085.18
6. Step 6: Final answer
   x = 1,719.42