Finding the Fourth Proportional to 1,613.94, 2,420.89 and 1,068.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.94 : 2,420.89 = 1,068.56 : x
2. Step 2: Convert to fraction form
   1,613.94/2,420.89 = 1,068.56/x
3. Step 3: Cross multiply
   1,613.94x = 2,420.89 × 1,068.56
4. Step 4: Simplify right side
   1,613.94x = 2,586,866.53
5. Step 5: Solve for x
   x = 2,586,866.53/1,613.94
6. Step 6: Final answer
   x = 1,602.83