Finding the Fourth Proportional to 1,415.83, 2,123.78 and 441.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.83 : 2,123.78 = 441.94 : x
2. Step 2: Convert to fraction form
   1,415.83/2,123.78 = 441.94/x
3. Step 3: Cross multiply
   1,415.83x = 2,123.78 × 441.94
4. Step 4: Simplify right side
   1,415.83x = 938,583.33
5. Step 5: Solve for x
   x = 938,583.33/1,415.83
6. Step 6: Final answer
   x = 662.92