Finding the Fourth Proportional to 1,726.10, 2,586.59 and 1,267.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.10 : 2,586.59 = 1,267.86 : x
2. Step 2: Convert to fraction form
   1,726.10/2,586.59 = 1,267.86/x
3. Step 3: Cross multiply
   1,726.10x = 2,586.59 × 1,267.86
4. Step 4: Simplify right side
   1,726.10x = 3,279,434.00
5. Step 5: Solve for x
   x = 3,279,434.00/1,726.10
6. Step 6: Final answer
   x = 1,899.91