Finding the Fourth Proportional to 2,930.69, 4,387.53 and 2,279.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,930.69 : 4,387.53 = 2,279.45 : x
2. Step 2: Convert to fraction form
   2,930.69/4,387.53 = 2,279.45/x
3. Step 3: Cross multiply
   2,930.69x = 4,387.53 × 2,279.45
4. Step 4: Simplify right side
   2,930.69x = 10,001,166.23
5. Step 5: Solve for x
   x = 10,001,166.23/2,930.69
6. Step 6: Final answer
   x = 3,412.56