Finding the Fourth Proportional to 2,123.25, 3,185.94 and 1,013.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.25 : 3,185.94 = 1,013.91 : x
2. Step 2: Convert to fraction form
   2,123.25/3,185.94 = 1,013.91/x
3. Step 3: Cross multiply
   2,123.25x = 3,185.94 × 1,013.91
4. Step 4: Simplify right side
   2,123.25x = 3,230,256.43
5. Step 5: Solve for x
   x = 3,230,256.43/2,123.25
6. Step 6: Final answer
   x = 1,521.37