Finding the Fourth Proportional to 2,105.40, 2,941.80 and 2,105.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.40 : 2,941.80 = 2,105.40 : x
2. Step 2: Convert to fraction form
   2,105.40/2,941.80 = 2,105.40/x
3. Step 3: Cross multiply
   2,105.40x = 2,941.80 × 2,105.40
4. Step 4: Simplify right side
   2,105.40x = 6,193,665.72
5. Step 5: Solve for x
   x = 6,193,665.72/2,105.40
6. Step 6: Final answer
   x = 2,941.80