Finding the Fourth Proportional to 1,381.37, 1,906.52 and 883.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.37 : 1,906.52 = 883.98 : x
2. Step 2: Convert to fraction form
   1,381.37/1,906.52 = 883.98/x
3. Step 3: Cross multiply
   1,381.37x = 1,906.52 × 883.98
4. Step 4: Simplify right side
   1,381.37x = 1,685,321.13
5. Step 5: Solve for x
   x = 1,685,321.13/1,381.37
6. Step 6: Final answer
   x = 1,220.04