Finding the Fourth Proportional to 1,736.17, 2,390.37 and 1,405.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.17 : 2,390.37 = 1,405.69 : x
2. Step 2: Convert to fraction form
   1,736.17/2,390.37 = 1,405.69/x
3. Step 3: Cross multiply
   1,736.17x = 2,390.37 × 1,405.69
4. Step 4: Simplify right side
   1,736.17x = 3,360,119.21
5. Step 5: Solve for x
   x = 3,360,119.21/1,736.17
6. Step 6: Final answer
   x = 1,935.36