Finding the Fourth Proportional to 2,585.90, 3,885.91 and 1,976.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585.90 : 3,885.91 = 1,976.96 : x
2. Step 2: Convert to fraction form
   2,585.90/3,885.91 = 1,976.96/x
3. Step 3: Cross multiply
   2,585.90x = 3,885.91 × 1,976.96
4. Step 4: Simplify right side
   2,585.90x = 7,682,279.89
5. Step 5: Solve for x
   x = 7,682,279.89/2,585.90
6. Step 6: Final answer
   x = 2,970.83