Finding the Fourth Proportional to 1,976.10, 2,728.83 and 1,585.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.10 : 2,728.83 = 1,585.98 : x
2. Step 2: Convert to fraction form
   1,976.10/2,728.83 = 1,585.98/x
3. Step 3: Cross multiply
   1,976.10x = 2,728.83 × 1,585.98
4. Step 4: Simplify right side
   1,976.10x = 4,327,869.80
5. Step 5: Solve for x
   x = 4,327,869.80/1,976.10
6. Step 6: Final answer
   x = 2,190.11