Finding the Fourth Proportional to 1,077.94, 1,487.58 and 612.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.94 : 1,487.58 = 612.18 : x
2. Step 2: Convert to fraction form
   1,077.94/1,487.58 = 612.18/x
3. Step 3: Cross multiply
   1,077.94x = 1,487.58 × 612.18
4. Step 4: Simplify right side
   1,077.94x = 910,666.72
5. Step 5: Solve for x
   x = 910,666.72/1,077.94
6. Step 6: Final answer
   x = 844.82