Finding the Fourth Proportional to 2,081.64, 3,122.22 and 985.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.64 : 3,122.22 = 985.32 : x
2. Step 2: Convert to fraction form
   2,081.64/3,122.22 = 985.32/x
3. Step 3: Cross multiply
   2,081.64x = 3,122.22 × 985.32
4. Step 4: Simplify right side
   2,081.64x = 3,076,385.81
5. Step 5: Solve for x
   x = 3,076,385.81/2,081.64
6. Step 6: Final answer
   x = 1,477.87