Finding the Fourth Proportional to 2,060.12, 3,085.76 and 1,915.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,060.12 : 3,085.76 = 1,915.85 : x
2. Step 2: Convert to fraction form
   2,060.12/3,085.76 = 1,915.85/x
3. Step 3: Cross multiply
   2,060.12x = 3,085.76 × 1,915.85
4. Step 4: Simplify right side
   2,060.12x = 5,911,865.80
5. Step 5: Solve for x
   x = 5,911,865.80/2,060.12
6. Step 6: Final answer
   x = 2,869.67