Finding the Fourth Proportional to 1,261.82, 1,748.06 and 1,231.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261.82 : 1,748.06 = 1,231.58 : x
2. Step 2: Convert to fraction form
   1,261.82/1,748.06 = 1,231.58/x
3. Step 3: Cross multiply
   1,261.82x = 1,748.06 × 1,231.58
4. Step 4: Simplify right side
   1,261.82x = 2,152,875.73
5. Step 5: Solve for x
   x = 2,152,875.73/1,261.82
6. Step 6: Final answer
   x = 1,706.17