Finding the Fourth Proportional to 1,889.12, 2,607.24 and 1,422.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,889.12 : 2,607.24 = 1,422.56 : x
2. Step 2: Convert to fraction form
   1,889.12/2,607.24 = 1,422.56/x
3. Step 3: Cross multiply
   1,889.12x = 2,607.24 × 1,422.56
4. Step 4: Simplify right side
   1,889.12x = 3,708,955.33
5. Step 5: Solve for x
   x = 3,708,955.33/1,889.12
6. Step 6: Final answer
   x = 1,963.32