Finding the Fourth Proportional to 1,360.83, 2,039.63 and 947.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.83 : 2,039.63 = 947.73 : x
2. Step 2: Convert to fraction form
   1,360.83/2,039.63 = 947.73/x
3. Step 3: Cross multiply
   1,360.83x = 2,039.63 × 947.73
4. Step 4: Simplify right side
   1,360.83x = 1,933,013.80
5. Step 5: Solve for x
   x = 1,933,013.80/1,360.83
6. Step 6: Final answer
   x = 1,420.47