Finding the Fourth Proportional to 2,555.79, 3,526.53 and 1,436.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.79 : 3,526.53 = 1,436.78 : x
2. Step 2: Convert to fraction form
   2,555.79/3,526.53 = 1,436.78/x
3. Step 3: Cross multiply
   2,555.79x = 3,526.53 × 1,436.78
4. Step 4: Simplify right side
   2,555.79x = 5,066,847.77
5. Step 5: Solve for x
   x = 5,066,847.77/2,555.79
6. Step 6: Final answer
   x = 1,982.50