Finding the Fourth Proportional to 2,804.52, 3,870.04 and 1,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,804.52 : 3,870.04 = 1,685.50 : x
2. Step 2: Convert to fraction form
   2,804.52/3,870.04 = 1,685.50/x
3. Step 3: Cross multiply
   2,804.52x = 3,870.04 × 1,685.50
4. Step 4: Simplify right side
   2,804.52x = 6,522,952.42
5. Step 5: Solve for x
   x = 6,522,952.42/2,804.52
6. Step 6: Final answer
   x = 2,325.87