Finding the Fourth Proportional to 1,616.86, 2,230.89 and 1,173.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.86 : 2,230.89 = 1,173.99 : x
2. Step 2: Convert to fraction form
   1,616.86/2,230.89 = 1,173.99/x
3. Step 3: Cross multiply
   1,616.86x = 2,230.89 × 1,173.99
4. Step 4: Simplify right side
   1,616.86x = 2,619,053.12
5. Step 5: Solve for x
   x = 2,619,053.12/1,616.86
6. Step 6: Final answer
   x = 1,619.84