Finding the Fourth Proportional to 1,422.04, 1,965.18 and 1,155.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.04 : 1,965.18 = 1,155.96 : x
2. Step 2: Convert to fraction form
   1,422.04/1,965.18 = 1,155.96/x
3. Step 3: Cross multiply
   1,422.04x = 1,965.18 × 1,155.96
4. Step 4: Simplify right side
   1,422.04x = 2,271,669.47
5. Step 5: Solve for x
   x = 2,271,669.47/1,422.04
6. Step 6: Final answer
   x = 1,597.47