Finding the Fourth Proportional to 2,111.70, 3,155.34 and 1,523.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.70 : 3,155.34 = 1,523.91 : x
2. Step 2: Convert to fraction form
   2,111.70/3,155.34 = 1,523.91/x
3. Step 3: Cross multiply
   2,111.70x = 3,155.34 × 1,523.91
4. Step 4: Simplify right side
   2,111.70x = 4,808,454.18
5. Step 5: Solve for x
   x = 4,808,454.18/2,111.70
6. Step 6: Final answer
   x = 2,277.05