Finding the Fourth Proportional to 1,783.35, 2,671.94 and 1,087.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.35 : 2,671.94 = 1,087.86 : x
2. Step 2: Convert to fraction form
   1,783.35/2,671.94 = 1,087.86/x
3. Step 3: Cross multiply
   1,783.35x = 2,671.94 × 1,087.86
4. Step 4: Simplify right side
   1,783.35x = 2,906,691.21
5. Step 5: Solve for x
   x = 2,906,691.21/1,783.35
6. Step 6: Final answer
   x = 1,629.91