Finding the Fourth Proportional to 1,419.72, 1,957.76 and 922.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.72 : 1,957.76 = 922.58 : x
2. Step 2: Convert to fraction form
   1,419.72/1,957.76 = 922.58/x
3. Step 3: Cross multiply
   1,419.72x = 1,957.76 × 922.58
4. Step 4: Simplify right side
   1,419.72x = 1,806,175.82
5. Step 5: Solve for x
   x = 1,806,175.82/1,419.72
6. Step 6: Final answer
   x = 1,272.21