Finding the Fourth Proportional to 1,672.63, 2,506.89 and 1,260.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.63 : 2,506.89 = 1,260.46 : x
2. Step 2: Convert to fraction form
   1,672.63/2,506.89 = 1,260.46/x
3. Step 3: Cross multiply
   1,672.63x = 2,506.89 × 1,260.46
4. Step 4: Simplify right side
   1,672.63x = 3,159,834.57
5. Step 5: Solve for x
   x = 3,159,834.57/1,672.63
6. Step 6: Final answer
   x = 1,889.14