Finding the Fourth Proportional to 2,085.42, 2,868.87 and 1,886.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.42 : 2,868.87 = 1,886.70 : x
2. Step 2: Convert to fraction form
   2,085.42/2,868.87 = 1,886.70/x
3. Step 3: Cross multiply
   2,085.42x = 2,868.87 × 1,886.70
4. Step 4: Simplify right side
   2,085.42x = 5,412,697.03
5. Step 5: Solve for x
   x = 5,412,697.03/2,085.42
6. Step 6: Final answer
   x = 2,595.49