Finding the Fourth Proportional to 3,429.99, 5,145.17 and 1,090.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.99 : 5,145.17 = 1,090.17 : x
2. Step 2: Convert to fraction form
   3,429.99/5,145.17 = 1,090.17/x
3. Step 3: Cross multiply
   3,429.99x = 5,145.17 × 1,090.17
4. Step 4: Simplify right side
   3,429.99x = 5,609,104.53
5. Step 5: Solve for x
   x = 5,609,104.53/3,429.99
6. Step 6: Final answer
   x = 1,635.31