Finding the Fourth Proportional to 1,447.17, 1,997.07 and 784.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.17 : 1,997.07 = 784.01 : x
2. Step 2: Convert to fraction form
   1,447.17/1,997.07 = 784.01/x
3. Step 3: Cross multiply
   1,447.17x = 1,997.07 × 784.01
4. Step 4: Simplify right side
   1,447.17x = 1,565,729.31
5. Step 5: Solve for x
   x = 1,565,729.31/1,447.17
6. Step 6: Final answer
   x = 1,081.93