Finding the Fourth Proportional to 1,503.29, 2,074.55 and 913.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503.29 : 2,074.55 = 913.86 : x
2. Step 2: Convert to fraction form
   1,503.29/2,074.55 = 913.86/x
3. Step 3: Cross multiply
   1,503.29x = 2,074.55 × 913.86
4. Step 4: Simplify right side
   1,503.29x = 1,895,843.69
5. Step 5: Solve for x
   x = 1,895,843.69/1,503.29
6. Step 6: Final answer
   x = 1,261.13