Finding the Fourth Proportional to 1,019.25, 1,533.06 and 930.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.25 : 1,533.06 = 930.69 : x
2. Step 2: Convert to fraction form
   1,019.25/1,533.06 = 930.69/x
3. Step 3: Cross multiply
   1,019.25x = 1,533.06 × 930.69
4. Step 4: Simplify right side
   1,019.25x = 1,426,803.61
5. Step 5: Solve for x
   x = 1,426,803.61/1,019.25
6. Step 6: Final answer
   x = 1,399.86