Finding the Fourth Proportional to 2,085.31, 2,876.72 and 1,377.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.31 : 2,876.72 = 1,377.43 : x
2. Step 2: Convert to fraction form
   2,085.31/2,876.72 = 1,377.43/x
3. Step 3: Cross multiply
   2,085.31x = 2,876.72 × 1,377.43
4. Step 4: Simplify right side
   2,085.31x = 3,962,473.54
5. Step 5: Solve for x
   x = 3,962,473.54/2,085.31
6. Step 6: Final answer
   x = 1,900.18