Finding the Fourth Proportional to 3,390.84, 5,085.23 and 1,050.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390.84 : 5,085.23 = 1,050.29 : x
2. Step 2: Convert to fraction form
   3,390.84/5,085.23 = 1,050.29/x
3. Step 3: Cross multiply
   3,390.84x = 5,085.23 × 1,050.29
4. Step 4: Simplify right side
   3,390.84x = 5,340,974.82
5. Step 5: Solve for x
   x = 5,340,974.82/3,390.84
6. Step 6: Final answer
   x = 1,575.12