Finding the Fourth Proportional to 2,555.70, 3,525.86 and 1,436.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.70 : 3,525.86 = 1,436.38 : x
2. Step 2: Convert to fraction form
   2,555.70/3,525.86 = 1,436.38/x
3. Step 3: Cross multiply
   2,555.70x = 3,525.86 × 1,436.38
4. Step 4: Simplify right side
   2,555.70x = 5,064,457.16
5. Step 5: Solve for x
   x = 5,064,457.16/2,555.70
6. Step 6: Final answer
   x = 1,981.64