Finding the Fourth Proportional to 3,117.48, 4,300.56 and 2,123.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,117.48 : 4,300.56 = 2,123.34 : x
2. Step 2: Convert to fraction form
   3,117.48/4,300.56 = 2,123.34/x
3. Step 3: Cross multiply
   3,117.48x = 4,300.56 × 2,123.34
4. Step 4: Simplify right side
   3,117.48x = 9,131,551.07
5. Step 5: Solve for x
   x = 9,131,551.07/3,117.48
6. Step 6: Final answer
   x = 2,929.15