Finding the Fourth Proportional to 1,855.38, 2,561.37 and 1,434.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855.38 : 2,561.37 = 1,434.81 : x
2. Step 2: Convert to fraction form
   1,855.38/2,561.37 = 1,434.81/x
3. Step 3: Cross multiply
   1,855.38x = 2,561.37 × 1,434.81
4. Step 4: Simplify right side
   1,855.38x = 3,675,079.29
5. Step 5: Solve for x
   x = 3,675,079.29/1,855.38
6. Step 6: Final answer
   x = 1,980.77