Finding the Fourth Proportional to 1,917.71, 2,870.99 and 1,426.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.71 : 2,870.99 = 1,426.29 : x
2. Step 2: Convert to fraction form
   1,917.71/2,870.99 = 1,426.29/x
3. Step 3: Cross multiply
   1,917.71x = 2,870.99 × 1,426.29
4. Step 4: Simplify right side
   1,917.71x = 4,094,864.33
5. Step 5: Solve for x
   x = 4,094,864.33/1,917.71
6. Step 6: Final answer
   x = 2,135.29