Finding the Fourth Proportional to 1,612.89, 2,415.75 and 1,573.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.89 : 2,415.75 = 1,573.61 : x
2. Step 2: Convert to fraction form
   1,612.89/2,415.75 = 1,573.61/x
3. Step 3: Cross multiply
   1,612.89x = 2,415.75 × 1,573.61
4. Step 4: Simplify right side
   1,612.89x = 3,801,436.28
5. Step 5: Solve for x
   x = 3,801,436.28/1,612.89
6. Step 6: Final answer
   x = 2,356.91