Finding the Fourth Proportional to 2,972.05, 4,459.07 and 1,123.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,972.05 : 4,459.07 = 1,123.69 : x
2. Step 2: Convert to fraction form
   2,972.05/4,459.07 = 1,123.69/x
3. Step 3: Cross multiply
   2,972.05x = 4,459.07 × 1,123.69
4. Step 4: Simplify right side
   2,972.05x = 5,010,612.37
5. Step 5: Solve for x
   x = 5,010,612.37/2,972.05
6. Step 6: Final answer
   x = 1,685.91