Finding the Fourth Proportional to 1,618.22, 2,424.12 and 1,068.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.22 : 2,424.12 = 1,068.72 : x
2. Step 2: Convert to fraction form
   1,618.22/2,424.12 = 1,068.72/x
3. Step 3: Cross multiply
   1,618.22x = 2,424.12 × 1,068.72
4. Step 4: Simplify right side
   1,618.22x = 2,590,705.53
5. Step 5: Solve for x
   x = 2,590,705.53/1,618.22
6. Step 6: Final answer
   x = 1,600.96