Finding the Fourth Proportional to 1,447.51, 1,997.55 and 784.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.51 : 1,997.55 = 784.35 : x
2. Step 2: Convert to fraction form
   1,447.51/1,997.55 = 784.35/x
3. Step 3: Cross multiply
   1,447.51x = 1,997.55 × 784.35
4. Step 4: Simplify right side
   1,447.51x = 1,566,778.34
5. Step 5: Solve for x
   x = 1,566,778.34/1,447.51
6. Step 6: Final answer
   x = 1,082.40