Finding the Fourth Proportional to 2,315.69, 3,474.35 and 1,538.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.69 : 3,474.35 = 1,538.78 : x
2. Step 2: Convert to fraction form
   2,315.69/3,474.35 = 1,538.78/x
3. Step 3: Cross multiply
   2,315.69x = 3,474.35 × 1,538.78
4. Step 4: Simplify right side
   2,315.69x = 5,346,246.77
5. Step 5: Solve for x
   x = 5,346,246.77/2,315.69
6. Step 6: Final answer
   x = 2,308.70