Finding the Fourth Proportional to 1,726.02, 2,586.89 and 800.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.02 : 2,586.89 = 800.30 : x
2. Step 2: Convert to fraction form
   1,726.02/2,586.89 = 800.30/x
3. Step 3: Cross multiply
   1,726.02x = 2,586.89 × 800.30
4. Step 4: Simplify right side
   1,726.02x = 2,070,296.53
5. Step 5: Solve for x
   x = 2,070,296.53/1,726.02
6. Step 6: Final answer
   x = 1,199.46