Finding the Fourth Proportional to 2,555.45, 3,526.13 and 1,436.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.45 : 3,526.13 = 1,436.23 : x
2. Step 2: Convert to fraction form
   2,555.45/3,526.13 = 1,436.23/x
3. Step 3: Cross multiply
   2,555.45x = 3,526.13 × 1,436.23
4. Step 4: Simplify right side
   2,555.45x = 5,064,341.69
5. Step 5: Solve for x
   x = 5,064,341.69/2,555.45
6. Step 6: Final answer
   x = 1,981.78