Finding the Fourth Proportional to 2,351.48, 3,526.77 and 890.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,351.48 : 3,526.77 = 890.15 : x
2. Step 2: Convert to fraction form
   2,351.48/3,526.77 = 890.15/x
3. Step 3: Cross multiply
   2,351.48x = 3,526.77 × 890.15
4. Step 4: Simplify right side
   2,351.48x = 3,139,354.32
5. Step 5: Solve for x
   x = 3,139,354.32/2,351.48
6. Step 6: Final answer
   x = 1,335.05