Finding the Fourth Proportional to 1,377.84, 2,066.91 and 404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.84 : 2,066.91 = 404.10 : x
2. Step 2: Convert to fraction form
   1,377.84/2,066.91 = 404.10/x
3. Step 3: Cross multiply
   1,377.84x = 2,066.91 × 404.10
4. Step 4: Simplify right side
   1,377.84x = 835,238.33
5. Step 5: Solve for x
   x = 835,238.33/1,377.84
6. Step 6: Final answer
   x = 606.19