Finding the Fourth Proportional to 1,483.37, 2,047.01 and 978.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.37 : 2,047.01 = 978.61 : x
2. Step 2: Convert to fraction form
   1,483.37/2,047.01 = 978.61/x
3. Step 3: Cross multiply
   1,483.37x = 2,047.01 × 978.61
4. Step 4: Simplify right side
   1,483.37x = 2,003,224.46
5. Step 5: Solve for x
   x = 2,003,224.46/1,483.37
6. Step 6: Final answer
   x = 1,350.46