Finding the Fourth Proportional to 1,382.15, 1,906.56 and 883.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.15 : 1,906.56 = 883.94 : x
2. Step 2: Convert to fraction form
   1,382.15/1,906.56 = 883.94/x
3. Step 3: Cross multiply
   1,382.15x = 1,906.56 × 883.94
4. Step 4: Simplify right side
   1,382.15x = 1,685,275.11
5. Step 5: Solve for x
   x = 1,685,275.11/1,382.15
6. Step 6: Final answer
   x = 1,219.31