Finding the Fourth Proportional to 1,788.09, 2,681.05 and 800.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788.09 : 2,681.05 = 800.72 : x
2. Step 2: Convert to fraction form
   1,788.09/2,681.05 = 800.72/x
3. Step 3: Cross multiply
   1,788.09x = 2,681.05 × 800.72
4. Step 4: Simplify right side
   1,788.09x = 2,146,775.06
5. Step 5: Solve for x
   x = 2,146,775.06/1,788.09
6. Step 6: Final answer
   x = 1,200.60