Finding the Fourth Proportional to 2,345.66, 3,519.16 and 1,111.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.66 : 3,519.16 = 1,111.37 : x
2. Step 2: Convert to fraction form
   2,345.66/3,519.16 = 1,111.37/x
3. Step 3: Cross multiply
   2,345.66x = 3,519.16 × 1,111.37
4. Step 4: Simplify right side
   2,345.66x = 3,911,094.52
5. Step 5: Solve for x
   x = 3,911,094.52/2,345.66
6. Step 6: Final answer
   x = 1,667.38