Finding the Fourth Proportional to 1,384.48, 1,910.90 and 942.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.48 : 1,910.90 = 942.56 : x
2. Step 2: Convert to fraction form
   1,384.48/1,910.90 = 942.56/x
3. Step 3: Cross multiply
   1,384.48x = 1,910.90 × 942.56
4. Step 4: Simplify right side
   1,384.48x = 1,801,137.90
5. Step 5: Solve for x
   x = 1,801,137.90/1,384.48
6. Step 6: Final answer
   x = 1,300.95