Finding the Fourth Proportional to 2,683.72, 4,026.74 and 1,298.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,683.72 : 4,026.74 = 1,298.10 : x
2. Step 2: Convert to fraction form
   2,683.72/4,026.74 = 1,298.10/x
3. Step 3: Cross multiply
   2,683.72x = 4,026.74 × 1,298.10
4. Step 4: Simplify right side
   2,683.72x = 5,227,084.57
5. Step 5: Solve for x
   x = 5,227,084.57/2,683.72
6. Step 6: Final answer
   x = 1,947.70