Finding the Fourth Proportional to 1,671.94, 2,507.89 and 803.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671.94 : 2,507.89 = 803.62 : x
2. Step 2: Convert to fraction form
   1,671.94/2,507.89 = 803.62/x
3. Step 3: Cross multiply
   1,671.94x = 2,507.89 × 803.62
4. Step 4: Simplify right side
   1,671.94x = 2,015,390.56
5. Step 5: Solve for x
   x = 2,015,390.56/1,671.94
6. Step 6: Final answer
   x = 1,205.42