Finding the Fourth Proportional to 1,551.82, 2,141.23 and 879.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.82 : 2,141.23 = 879.62 : x
2. Step 2: Convert to fraction form
   1,551.82/2,141.23 = 879.62/x
3. Step 3: Cross multiply
   1,551.82x = 2,141.23 × 879.62
4. Step 4: Simplify right side
   1,551.82x = 1,883,464.33
5. Step 5: Solve for x
   x = 1,883,464.33/1,551.82
6. Step 6: Final answer
   x = 1,213.72