Finding the Fourth Proportional to 2,138.24, 3,187.40 and 2,054.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138.24 : 3,187.40 = 2,054.08 : x
2. Step 2: Convert to fraction form
   2,138.24/3,187.40 = 2,054.08/x
3. Step 3: Cross multiply
   2,138.24x = 3,187.40 × 2,054.08
4. Step 4: Simplify right side
   2,138.24x = 6,547,174.59
5. Step 5: Solve for x
   x = 6,547,174.59/2,138.24
6. Step 6: Final answer
   x = 3,061.95