Finding the Fourth Proportional to 1,445.03, 1,996.41 and 947.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.03 : 1,996.41 = 947.49 : x
2. Step 2: Convert to fraction form
   1,445.03/1,996.41 = 947.49/x
3. Step 3: Cross multiply
   1,445.03x = 1,996.41 × 947.49
4. Step 4: Simplify right side
   1,445.03x = 1,891,578.51
5. Step 5: Solve for x
   x = 1,891,578.51/1,445.03
6. Step 6: Final answer
   x = 1,309.02