Finding the Fourth Proportional to 1,788.76, 2,682.15 and 618.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788.76 : 2,682.15 = 618.22 : x
2. Step 2: Convert to fraction form
   1,788.76/2,682.15 = 618.22/x
3. Step 3: Cross multiply
   1,788.76x = 2,682.15 × 618.22
4. Step 4: Simplify right side
   1,788.76x = 1,658,158.77
5. Step 5: Solve for x
   x = 1,658,158.77/1,788.76
6. Step 6: Final answer
   x = 926.99