Finding the Fourth Proportional to 2,983.95, 4,478.18 and 1,111.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,983.95 : 4,478.18 = 1,111.58 : x
2. Step 2: Convert to fraction form
   2,983.95/4,478.18 = 1,111.58/x
3. Step 3: Cross multiply
   2,983.95x = 4,478.18 × 1,111.58
4. Step 4: Simplify right side
   2,983.95x = 4,977,827.38
5. Step 5: Solve for x
   x = 4,977,827.38/2,983.95
6. Step 6: Final answer
   x = 1,668.20