Finding the Fourth Proportional to 2,316.48, 3,456.72 and 2,109.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,316.48 : 3,456.72 = 2,109.48 : x
2. Step 2: Convert to fraction form
   2,316.48/3,456.72 = 2,109.48/x
3. Step 3: Cross multiply
   2,316.48x = 3,456.72 × 2,109.48
4. Step 4: Simplify right side
   2,316.48x = 7,291,881.71
5. Step 5: Solve for x
   x = 7,291,881.71/2,316.48
6. Step 6: Final answer
   x = 3,147.83