Finding the Fourth Proportional to 1,671.83, 2,307.41 and 1,008.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671.83 : 2,307.41 = 1,008.78 : x
2. Step 2: Convert to fraction form
   1,671.83/2,307.41 = 1,008.78/x
3. Step 3: Cross multiply
   1,671.83x = 2,307.41 × 1,008.78
4. Step 4: Simplify right side
   1,671.83x = 2,327,664.02
5. Step 5: Solve for x
   x = 2,327,664.02/1,671.83
6. Step 6: Final answer
   x = 1,392.29