Finding the Fourth Proportional to 3,521.06, 4,857.54 and 2,123

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521.06 : 4,857.54 = 2,123 : x
2. Step 2: Convert to fraction form
   3,521.06/4,857.54 = 2,123/x
3. Step 3: Cross multiply
   3,521.06x = 4,857.54 × 2,123
4. Step 4: Simplify right side
   3,521.06x = 10,312,557.42
5. Step 5: Solve for x
   x = 10,312,557.42/3,521.06
6. Step 6: Final answer
   x = 2,928.82