Finding the Fourth Proportional to 1,051.94, 1,451.55 and 603.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.94 : 1,451.55 = 603.78 : x
2. Step 2: Convert to fraction form
   1,051.94/1,451.55 = 603.78/x
3. Step 3: Cross multiply
   1,051.94x = 1,451.55 × 603.78
4. Step 4: Simplify right side
   1,051.94x = 876,418.45
5. Step 5: Solve for x
   x = 876,418.45/1,051.94
6. Step 6: Final answer
   x = 833.15