Finding the Fourth Proportional to 3,389.81, 5,085.17 and 1,050

Step by Step Solution

1. Step 1: Write the proportion equation
   3,389.81 : 5,085.17 = 1,050 : x
2. Step 2: Convert to fraction form
   3,389.81/5,085.17 = 1,050/x
3. Step 3: Cross multiply
   3,389.81x = 5,085.17 × 1,050
4. Step 4: Simplify right side
   3,389.81x = 5,339,423.25
5. Step 5: Solve for x
   x = 5,339,423.25/3,389.81
6. Step 6: Final answer
   x = 1,575.14