Finding the Fourth Proportional to 1,503, 2,074.38 and 1,089.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503 : 2,074.38 = 1,089.72 : x
2. Step 2: Convert to fraction form
   1,503/2,074.38 = 1,089.72/x
3. Step 3: Cross multiply
   1,503x = 2,074.38 × 1,089.72
4. Step 4: Simplify right side
   1,503x = 2,260,493.37
5. Step 5: Solve for x
   x = 2,260,493.37/1,503
6. Step 6: Final answer
   x = 1,503.99