Finding the Fourth Proportional to 2,648.98, 3,974.13 and 1,870.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.98 : 3,974.13 = 1,870.51 : x
2. Step 2: Convert to fraction form
   2,648.98/3,974.13 = 1,870.51/x
3. Step 3: Cross multiply
   2,648.98x = 3,974.13 × 1,870.51
4. Step 4: Simplify right side
   2,648.98x = 7,433,632.96
5. Step 5: Solve for x
   x = 7,433,632.96/2,648.98
6. Step 6: Final answer
   x = 2,806.22