Finding the Fourth Proportional to 994.79, 1,492.50 and 776.17

Step by Step Solution

1. Step 1: Write the proportion equation
   994.79 : 1,492.50 = 776.17 : x
2. Step 2: Convert to fraction form
   994.79/1,492.50 = 776.17/x
3. Step 3: Cross multiply
   994.79x = 1,492.50 × 776.17
4. Step 4: Simplify right side
   994.79x = 1,158,433.73
5. Step 5: Solve for x
   x = 1,158,433.73/994.79
6. Step 6: Final answer
   x = 1,164.50