Finding the Fourth Proportional to 2,903.72, 4,356.40 and 1,173.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,903.72 : 4,356.40 = 1,173.56 : x
2. Step 2: Convert to fraction form
   2,903.72/4,356.40 = 1,173.56/x
3. Step 3: Cross multiply
   2,903.72x = 4,356.40 × 1,173.56
4. Step 4: Simplify right side
   2,903.72x = 5,112,496.78
5. Step 5: Solve for x
   x = 5,112,496.78/2,903.72
6. Step 6: Final answer
   x = 1,760.67