Finding the Fourth Proportional to 1,598.34, 2,392.56 and 866.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.34 : 2,392.56 = 866.10 : x
2. Step 2: Convert to fraction form
   1,598.34/2,392.56 = 866.10/x
3. Step 3: Cross multiply
   1,598.34x = 2,392.56 × 866.10
4. Step 4: Simplify right side
   1,598.34x = 2,072,196.22
5. Step 5: Solve for x
   x = 2,072,196.22/1,598.34
6. Step 6: Final answer
   x = 1,296.47