Finding the Fourth Proportional to 3,721.90, 5,580.42 and 1,870.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.90 : 5,580.42 = 1,870.24 : x
2. Step 2: Convert to fraction form
   3,721.90/5,580.42 = 1,870.24/x
3. Step 3: Cross multiply
   3,721.90x = 5,580.42 × 1,870.24
4. Step 4: Simplify right side
   3,721.90x = 10,436,724.70
5. Step 5: Solve for x
   x = 10,436,724.70/3,721.90
6. Step 6: Final answer
   x = 2,804.14