Finding the Fourth Proportional to 2,996.10, 4,131.95 and 1,815.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,996.10 : 4,131.95 = 1,815.12 : x
2. Step 2: Convert to fraction form
   2,996.10/4,131.95 = 1,815.12/x
3. Step 3: Cross multiply
   2,996.10x = 4,131.95 × 1,815.12
4. Step 4: Simplify right side
   2,996.10x = 7,499,976.01
5. Step 5: Solve for x
   x = 7,499,976.01/2,996.10
6. Step 6: Final answer
   x = 2,503.25