Finding the Fourth Proportional to 1,917.54, 2,870.72 and 1,426.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.54 : 2,870.72 = 1,426.13 : x
2. Step 2: Convert to fraction form
   1,917.54/2,870.72 = 1,426.13/x
3. Step 3: Cross multiply
   1,917.54x = 2,870.72 × 1,426.13
4. Step 4: Simplify right side
   1,917.54x = 4,094,019.91
5. Step 5: Solve for x
   x = 4,094,019.91/1,917.54
6. Step 6: Final answer
   x = 2,135.04