Finding the Fourth Proportional to 1,407.54, 1,942.20 and 883.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.54 : 1,942.20 = 883.74 : x
2. Step 2: Convert to fraction form
   1,407.54/1,942.20 = 883.74/x
3. Step 3: Cross multiply
   1,407.54x = 1,942.20 × 883.74
4. Step 4: Simplify right side
   1,407.54x = 1,716,399.83
5. Step 5: Solve for x
   x = 1,716,399.83/1,407.54
6. Step 6: Final answer
   x = 1,219.43