Finding the Fourth Proportional to 2,123.10, 2,930.22 and 1,238.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.10 : 2,930.22 = 1,238.94 : x
2. Step 2: Convert to fraction form
   2,123.10/2,930.22 = 1,238.94/x
3. Step 3: Cross multiply
   2,123.10x = 2,930.22 × 1,238.94
4. Step 4: Simplify right side
   2,123.10x = 3,630,366.77
5. Step 5: Solve for x
   x = 3,630,366.77/2,123.10
6. Step 6: Final answer
   x = 1,709.94