Finding the Fourth Proportional to 1,810.31, 2,714.48 and 835.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.31 : 2,714.48 = 835.55 : x
2. Step 2: Convert to fraction form
   1,810.31/2,714.48 = 835.55/x
3. Step 3: Cross multiply
   1,810.31x = 2,714.48 × 835.55
4. Step 4: Simplify right side
   1,810.31x = 2,268,066.01
5. Step 5: Solve for x
   x = 2,268,066.01/1,810.31
6. Step 6: Final answer
   x = 1,252.86