Finding the Fourth Proportional to 2,123.10, 2,965.05 and 2,123.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.10 : 2,965.05 = 2,123.10 : x
2. Step 2: Convert to fraction form
   2,123.10/2,965.05 = 2,123.10/x
3. Step 3: Cross multiply
   2,123.10x = 2,965.05 × 2,123.10
4. Step 4: Simplify right side
   2,123.10x = 6,295,097.66
5. Step 5: Solve for x
   x = 6,295,097.66/2,123.10
6. Step 6: Final answer
   x = 2,965.05