Finding the Fourth Proportional to 1,363.61, 1,881.88 and 766.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.61 : 1,881.88 = 766.17 : x
2. Step 2: Convert to fraction form
   1,363.61/1,881.88 = 766.17/x
3. Step 3: Cross multiply
   1,363.61x = 1,881.88 × 766.17
4. Step 4: Simplify right side
   1,363.61x = 1,441,840.00
5. Step 5: Solve for x
   x = 1,441,840.00/1,363.61
6. Step 6: Final answer
   x = 1,057.37