Finding the Fourth Proportional to 1,384.72, 1,910.76 and 943.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.72 : 1,910.76 = 943.18 : x
2. Step 2: Convert to fraction form
   1,384.72/1,910.76 = 943.18/x
3. Step 3: Cross multiply
   1,384.72x = 1,910.76 × 943.18
4. Step 4: Simplify right side
   1,384.72x = 1,802,190.62
5. Step 5: Solve for x
   x = 1,802,190.62/1,384.72
6. Step 6: Final answer
   x = 1,301.48