Finding the Fourth Proportional to 1,084.59, 1,496.91 and 612.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.59 : 1,496.91 = 612.70 : x
2. Step 2: Convert to fraction form
   1,084.59/1,496.91 = 612.70/x
3. Step 3: Cross multiply
   1,084.59x = 1,496.91 × 612.70
4. Step 4: Simplify right side
   1,084.59x = 917,155.31
5. Step 5: Solve for x
   x = 917,155.31/1,084.59
6. Step 6: Final answer
   x = 845.62