Finding the Fourth Proportional to 2,315.76, 3,196.62 and 1,530.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.76 : 3,196.62 = 1,530.87 : x
2. Step 2: Convert to fraction form
   2,315.76/3,196.62 = 1,530.87/x
3. Step 3: Cross multiply
   2,315.76x = 3,196.62 × 1,530.87
4. Step 4: Simplify right side
   2,315.76x = 4,893,609.66
5. Step 5: Solve for x
   x = 4,893,609.66/2,315.76
6. Step 6: Final answer
   x = 2,113.18