Finding the Fourth Proportional to 3,870.34, 5,807.34 and 1,789.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.34 : 5,807.34 = 1,789.06 : x
2. Step 2: Convert to fraction form
   3,870.34/5,807.34 = 1,789.06/x
3. Step 3: Cross multiply
   3,870.34x = 5,807.34 × 1,789.06
4. Step 4: Simplify right side
   3,870.34x = 10,389,679.70
5. Step 5: Solve for x
   x = 10,389,679.70/3,870.34
6. Step 6: Final answer
   x = 2,684.44