Finding the Fourth Proportional to 1,788.78, 2,468.58 and 1,002.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788.78 : 2,468.58 = 1,002.81 : x
2. Step 2: Convert to fraction form
   1,788.78/2,468.58 = 1,002.81/x
3. Step 3: Cross multiply
   1,788.78x = 2,468.58 × 1,002.81
4. Step 4: Simplify right side
   1,788.78x = 2,475,516.71
5. Step 5: Solve for x
   x = 2,475,516.71/1,788.78
6. Step 6: Final answer
   x = 1,383.91