Finding the Fourth Proportional to 2,061.61, 2,845.56 and 1,177.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.61 : 2,845.56 = 1,177.72 : x
2. Step 2: Convert to fraction form
   2,061.61/2,845.56 = 1,177.72/x
3. Step 3: Cross multiply
   2,061.61x = 2,845.56 × 1,177.72
4. Step 4: Simplify right side
   2,061.61x = 3,351,272.92
5. Step 5: Solve for x
   x = 3,351,272.92/2,061.61
6. Step 6: Final answer
   x = 1,625.56