Finding the Fourth Proportional to 2,085.48, 2,877.66 and 1,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.48 : 2,877.66 = 1,339.50 : x
2. Step 2: Convert to fraction form
   2,085.48/2,877.66 = 1,339.50/x
3. Step 3: Cross multiply
   2,085.48x = 2,877.66 × 1,339.50
4. Step 4: Simplify right side
   2,085.48x = 3,854,625.57
5. Step 5: Solve for x
   x = 3,854,625.57/2,085.48
6. Step 6: Final answer
   x = 1,848.32