Finding the Fourth Proportional to 2,379.45, 3,569.42 and 992.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.45 : 3,569.42 = 992.01 : x
2. Step 2: Convert to fraction form
   2,379.45/3,569.42 = 992.01/x
3. Step 3: Cross multiply
   2,379.45x = 3,569.42 × 992.01
4. Step 4: Simplify right side
   2,379.45x = 3,540,895.37
5. Step 5: Solve for x
   x = 3,540,895.37/2,379.45
6. Step 6: Final answer
   x = 1,488.12