Finding the Fourth Proportional to 2,346.72, 3,518.76 and 1,113

Step by Step Solution

1. Step 1: Write the proportion equation
   2,346.72 : 3,518.76 = 1,113 : x
2. Step 2: Convert to fraction form
   2,346.72/3,518.76 = 1,113/x
3. Step 3: Cross multiply
   2,346.72x = 3,518.76 × 1,113
4. Step 4: Simplify right side
   2,346.72x = 3,916,379.88
5. Step 5: Solve for x
   x = 3,916,379.88/2,346.72
6. Step 6: Final answer
   x = 1,668.87