Finding the Fourth Proportional to 1,807.50, 2,494.35 and 979.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.50 : 2,494.35 = 979.50 : x
2. Step 2: Convert to fraction form
   1,807.50/2,494.35 = 979.50/x
3. Step 3: Cross multiply
   1,807.50x = 2,494.35 × 979.50
4. Step 4: Simplify right side
   1,807.50x = 2,443,215.83
5. Step 5: Solve for x
   x = 2,443,215.83/1,807.50
6. Step 6: Final answer
   x = 1,351.71