Finding the Fourth Proportional to 1,030.28, 1,547.46 and 845.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.28 : 1,547.46 = 845.50 : x
2. Step 2: Convert to fraction form
   1,030.28/1,547.46 = 845.50/x
3. Step 3: Cross multiply
   1,030.28x = 1,547.46 × 845.50
4. Step 4: Simplify right side
   1,030.28x = 1,308,373.56
5. Step 5: Solve for x
   x = 1,308,373.56/1,030.28
6. Step 6: Final answer
   x = 1,269.93