Finding the Fourth Proportional to 1,621.17, 2,237.27 and 922.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.17 : 2,237.27 = 922.59 : x
2. Step 2: Convert to fraction form
   1,621.17/2,237.27 = 922.59/x
3. Step 3: Cross multiply
   1,621.17x = 2,237.27 × 922.59
4. Step 4: Simplify right side
   1,621.17x = 2,064,078.32
5. Step 5: Solve for x
   x = 2,064,078.32/1,621.17
6. Step 6: Final answer
   x = 1,273.20