Finding the Fourth Proportional to 2,003.78, 2,764.59 and 1,296.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.78 : 2,764.59 = 1,296.01 : x
2. Step 2: Convert to fraction form
   2,003.78/2,764.59 = 1,296.01/x
3. Step 3: Cross multiply
   2,003.78x = 2,764.59 × 1,296.01
4. Step 4: Simplify right side
   2,003.78x = 3,582,936.29
5. Step 5: Solve for x
   x = 3,582,936.29/2,003.78
6. Step 6: Final answer
   x = 1,788.09