Finding the Fourth Proportional to 2,112.70, 3,156.83 and 1,524.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.70 : 3,156.83 = 1,524.91 : x
2. Step 2: Convert to fraction form
   2,112.70/3,156.83 = 1,524.91/x
3. Step 3: Cross multiply
   2,112.70x = 3,156.83 × 1,524.91
4. Step 4: Simplify right side
   2,112.70x = 4,813,881.64
5. Step 5: Solve for x
   x = 4,813,881.64/2,112.70
6. Step 6: Final answer
   x = 2,278.54