Finding the Fourth Proportional to 1,672.83, 2,504.61 and 1,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.83 : 2,504.61 = 1,260.72 : x
2. Step 2: Convert to fraction form
   1,672.83/2,504.61 = 1,260.72/x
3. Step 3: Cross multiply
   1,672.83x = 2,504.61 × 1,260.72
4. Step 4: Simplify right side
   1,672.83x = 3,157,611.92
5. Step 5: Solve for x
   x = 3,157,611.92/1,672.83
6. Step 6: Final answer
   x = 1,887.59