Finding the Fourth Proportional to 2,922.56, 4,385.01 and 1,190.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,922.56 : 4,385.01 = 1,190.78 : x
2. Step 2: Convert to fraction form
   2,922.56/4,385.01 = 1,190.78/x
3. Step 3: Cross multiply
   2,922.56x = 4,385.01 × 1,190.78
4. Step 4: Simplify right side
   2,922.56x = 5,221,582.21
5. Step 5: Solve for x
   x = 5,221,582.21/2,922.56
6. Step 6: Final answer
   x = 1,786.65