Finding the Fourth Proportional to 2,649.02, 3,974.20 and 1,870.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,649.02 : 3,974.20 = 1,870.55 : x
2. Step 2: Convert to fraction form
   2,649.02/3,974.20 = 1,870.55/x
3. Step 3: Cross multiply
   2,649.02x = 3,974.20 × 1,870.55
4. Step 4: Simplify right side
   2,649.02x = 7,433,936.91
5. Step 5: Solve for x
   x = 7,433,936.91/2,649.02
6. Step 6: Final answer
   x = 2,806.29