Finding the Fourth Proportional to 1,616.72, 2,230.00 and 1,111.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.72 : 2,230.00 = 1,111.88 : x
2. Step 2: Convert to fraction form
   1,616.72/2,230.00 = 1,111.88/x
3. Step 3: Cross multiply
   1,616.72x = 2,230.00 × 1,111.88
4. Step 4: Simplify right side
   1,616.72x = 2,479,486.84
5. Step 5: Solve for x
   x = 2,479,486.84/1,616.72
6. Step 6: Final answer
   x = 1,533.66