Finding the Fourth Proportional to 1,705.57, 2,561.40 and 1,435.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.57 : 2,561.40 = 1,435.24 : x
2. Step 2: Convert to fraction form
   1,705.57/2,561.40 = 1,435.24/x
3. Step 3: Cross multiply
   1,705.57x = 2,561.40 × 1,435.24
4. Step 4: Simplify right side
   1,705.57x = 3,676,223.74
5. Step 5: Solve for x
   x = 3,676,223.74/1,705.57
6. Step 6: Final answer
   x = 2,155.42