Finding the Fourth Proportional to 1,644.55, 2,268.79 and 1,077.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.55 : 2,268.79 = 1,077.22 : x
2. Step 2: Convert to fraction form
   1,644.55/2,268.79 = 1,077.22/x
3. Step 3: Cross multiply
   1,644.55x = 2,268.79 × 1,077.22
4. Step 4: Simplify right side
   1,644.55x = 2,443,985.96
5. Step 5: Solve for x
   x = 2,443,985.96/1,644.55
6. Step 6: Final answer
   x = 1,486.12