Finding the Fourth Proportional to 1,671.87, 2,505.60 and 1,302.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671.87 : 2,505.60 = 1,302.15 : x
2. Step 2: Convert to fraction form
   1,671.87/2,505.60 = 1,302.15/x
3. Step 3: Cross multiply
   1,671.87x = 2,505.60 × 1,302.15
4. Step 4: Simplify right side
   1,671.87x = 3,262,667.04
5. Step 5: Solve for x
   x = 3,262,667.04/1,671.87
6. Step 6: Final answer
   x = 1,951.51