Finding the Fourth Proportional to 1,622.37, 2,238.71 and 914.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.37 : 2,238.71 = 914.20 : x
2. Step 2: Convert to fraction form
   1,622.37/2,238.71 = 914.20/x
3. Step 3: Cross multiply
   1,622.37x = 2,238.71 × 914.20
4. Step 4: Simplify right side
   1,622.37x = 2,046,628.68
5. Step 5: Solve for x
   x = 2,046,628.68/1,622.37
6. Step 6: Final answer
   x = 1,261.51