Finding the Fourth Proportional to 2,123.61, 3,185.06 and 584.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.61 : 3,185.06 = 584.25 : x
2. Step 2: Convert to fraction form
   2,123.61/3,185.06 = 584.25/x
3. Step 3: Cross multiply
   2,123.61x = 3,185.06 × 584.25
4. Step 4: Simplify right side
   2,123.61x = 1,860,868.38
5. Step 5: Solve for x
   x = 1,860,868.38/2,123.61
6. Step 6: Final answer
   x = 876.28