Finding the Fourth Proportional to 1,385.16, 1,910.82 and 943.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.16 : 1,910.82 = 943.08 : x
2. Step 2: Convert to fraction form
   1,385.16/1,910.82 = 943.08/x
3. Step 3: Cross multiply
   1,385.16x = 1,910.82 × 943.08
4. Step 4: Simplify right side
   1,385.16x = 1,802,056.13
5. Step 5: Solve for x
   x = 1,802,056.13/1,385.16
6. Step 6: Final answer
   x = 1,300.97