Finding the Fourth Proportional to 1,870.56, 2,791.98 and 1,724.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.56 : 2,791.98 = 1,724.22 : x
2. Step 2: Convert to fraction form
   1,870.56/2,791.98 = 1,724.22/x
3. Step 3: Cross multiply
   1,870.56x = 2,791.98 × 1,724.22
4. Step 4: Simplify right side
   1,870.56x = 4,813,987.76
5. Step 5: Solve for x
   x = 4,813,987.76/1,870.56
6. Step 6: Final answer
   x = 2,573.55