Finding the Fourth Proportional to 1,904.40, 2,839.53 and 1,887.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.40 : 2,839.53 = 1,887.42 : x
2. Step 2: Convert to fraction form
   1,904.40/2,839.53 = 1,887.42/x
3. Step 3: Cross multiply
   1,904.40x = 2,839.53 × 1,887.42
4. Step 4: Simplify right side
   1,904.40x = 5,359,385.71
5. Step 5: Solve for x
   x = 5,359,385.71/1,904.40
6. Step 6: Final answer
   x = 2,814.21