Finding the Fourth Proportional to 1,049.99, 1,575.59 and 993.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.99 : 1,575.59 = 993.69 : x
2. Step 2: Convert to fraction form
   1,049.99/1,575.59 = 993.69/x
3. Step 3: Cross multiply
   1,049.99x = 1,575.59 × 993.69
4. Step 4: Simplify right side
   1,049.99x = 1,565,643.06
5. Step 5: Solve for x
   x = 1,565,643.06/1,049.99
6. Step 6: Final answer
   x = 1,491.11