Finding the Fourth Proportional to 1,059.78, 1,598.81 and 1,030.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.78 : 1,598.81 = 1,030.62 : x
2. Step 2: Convert to fraction form
   1,059.78/1,598.81 = 1,030.62/x
3. Step 3: Cross multiply
   1,059.78x = 1,598.81 × 1,030.62
4. Step 4: Simplify right side
   1,059.78x = 1,647,760.41
5. Step 5: Solve for x
   x = 1,647,760.41/1,059.78
6. Step 6: Final answer
   x = 1,554.81