Finding the Fourth Proportional to 1,388.74, 2,081.31 and 566.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.74 : 2,081.31 = 566.06 : x
2. Step 2: Convert to fraction form
   1,388.74/2,081.31 = 566.06/x
3. Step 3: Cross multiply
   1,388.74x = 2,081.31 × 566.06
4. Step 4: Simplify right side
   1,388.74x = 1,178,146.34
5. Step 5: Solve for x
   x = 1,178,146.34/1,388.74
6. Step 6: Final answer
   x = 848.36