Finding the Fourth Proportional to 2,345.47, 3,516.18 and 1,112.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.47 : 3,516.18 = 1,112.25 : x
2. Step 2: Convert to fraction form
   2,345.47/3,516.18 = 1,112.25/x
3. Step 3: Cross multiply
   2,345.47x = 3,516.18 × 1,112.25
4. Step 4: Simplify right side
   2,345.47x = 3,910,871.21
5. Step 5: Solve for x
   x = 3,910,871.21/2,345.47
6. Step 6: Final answer
   x = 1,667.41