Finding the Fourth Proportional to 2,805.18, 3,870.28 and 1,626.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805.18 : 3,870.28 = 1,626.02 : x
2. Step 2: Convert to fraction form
   2,805.18/3,870.28 = 1,626.02/x
3. Step 3: Cross multiply
   2,805.18x = 3,870.28 × 1,626.02
4. Step 4: Simplify right side
   2,805.18x = 6,293,152.69
5. Step 5: Solve for x
   x = 6,293,152.69/2,805.18
6. Step 6: Final answer
   x = 2,243.40