Finding the Fourth Proportional to 1,074.99, 1,603.86 and 958.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.99 : 1,603.86 = 958.05 : x
2. Step 2: Convert to fraction form
   1,074.99/1,603.86 = 958.05/x
3. Step 3: Cross multiply
   1,074.99x = 1,603.86 × 958.05
4. Step 4: Simplify right side
   1,074.99x = 1,536,578.07
5. Step 5: Solve for x
   x = 1,536,578.07/1,074.99
6. Step 6: Final answer
   x = 1,429.39