Finding the Fourth Proportional to 1,524.57, 2,100.76 and 1,256.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.57 : 2,100.76 = 1,256.05 : x
2. Step 2: Convert to fraction form
   1,524.57/2,100.76 = 1,256.05/x
3. Step 3: Cross multiply
   1,524.57x = 2,100.76 × 1,256.05
4. Step 4: Simplify right side
   1,524.57x = 2,638,659.60
5. Step 5: Solve for x
   x = 2,638,659.60/1,524.57
6. Step 6: Final answer
   x = 1,730.76