Finding the Fourth Proportional to 2,300.15, 3,173.28 and 1,503.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.15 : 3,173.28 = 1,503.21 : x
2. Step 2: Convert to fraction form
   2,300.15/3,173.28 = 1,503.21/x
3. Step 3: Cross multiply
   2,300.15x = 3,173.28 × 1,503.21
4. Step 4: Simplify right side
   2,300.15x = 4,770,106.23
5. Step 5: Solve for x
   x = 4,770,106.23/2,300.15
6. Step 6: Final answer
   x = 2,073.83