Finding the Fourth Proportional to 1,422.60, 1,964.40 and 892.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.60 : 1,964.40 = 892.37 : x
2. Step 2: Convert to fraction form
   1,422.60/1,964.40 = 892.37/x
3. Step 3: Cross multiply
   1,422.60x = 1,964.40 × 892.37
4. Step 4: Simplify right side
   1,422.60x = 1,752,965.83
5. Step 5: Solve for x
   x = 1,752,965.83/1,422.60
6. Step 6: Final answer
   x = 1,232.23