Finding the Fourth Proportional to 2,056.61, 3,085.21 and 650.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.61 : 3,085.21 = 650.55 : x
2. Step 2: Convert to fraction form
   2,056.61/3,085.21 = 650.55/x
3. Step 3: Cross multiply
   2,056.61x = 3,085.21 × 650.55
4. Step 4: Simplify right side
   2,056.61x = 2,007,081.74
5. Step 5: Solve for x
   x = 2,007,081.74/2,056.61
6. Step 6: Final answer
   x = 975.92