Finding the Fourth Proportional to 1,917.10, 2,871.12 and 943.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.10 : 2,871.12 = 943.48 : x
2. Step 2: Convert to fraction form
   1,917.10/2,871.12 = 943.48/x
3. Step 3: Cross multiply
   1,917.10x = 2,871.12 × 943.48
4. Step 4: Simplify right side
   1,917.10x = 2,708,844.30
5. Step 5: Solve for x
   x = 2,708,844.30/1,917.10
6. Step 6: Final answer
   x = 1,412.99