Finding the Fourth Proportional to 2,555.42, 3,526.64 and 1,436.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.42 : 3,526.64 = 1,436.40 : x
2. Step 2: Convert to fraction form
   2,555.42/3,526.64 = 1,436.40/x
3. Step 3: Cross multiply
   2,555.42x = 3,526.64 × 1,436.40
4. Step 4: Simplify right side
   2,555.42x = 5,065,658.51
5. Step 5: Solve for x
   x = 5,065,658.51/2,555.42
6. Step 6: Final answer
   x = 1,982.32