Finding the Fourth Proportional to 2,371.89, 3,556.79 and 890.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.89 : 3,556.79 = 890.07 : x
2. Step 2: Convert to fraction form
   2,371.89/3,556.79 = 890.07/x
3. Step 3: Cross multiply
   2,371.89x = 3,556.79 × 890.07
4. Step 4: Simplify right side
   2,371.89x = 3,165,792.08
5. Step 5: Solve for x
   x = 3,165,792.08/2,371.89
6. Step 6: Final answer
   x = 1,334.71