Finding the Fourth Proportional to 1,815.76, 2,506.86 and 1,256.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,815.76 : 2,506.86 = 1,256.02 : x
2. Step 2: Convert to fraction form
   1,815.76/2,506.86 = 1,256.02/x
3. Step 3: Cross multiply
   1,815.76x = 2,506.86 × 1,256.02
4. Step 4: Simplify right side
   1,815.76x = 3,148,666.30
5. Step 5: Solve for x
   x = 3,148,666.30/1,815.76
6. Step 6: Final answer
   x = 1,734.08