Finding the Fourth Proportional to 1,363.86, 1,881.90 and 774.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.86 : 1,881.90 = 774.18 : x
2. Step 2: Convert to fraction form
   1,363.86/1,881.90 = 774.18/x
3. Step 3: Cross multiply
   1,363.86x = 1,881.90 × 774.18
4. Step 4: Simplify right side
   1,363.86x = 1,456,929.34
5. Step 5: Solve for x
   x = 1,456,929.34/1,363.86
6. Step 6: Final answer
   x = 1,068.24