Finding the Fourth Proportional to 1,019.86, 1,526.51 and 923.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.86 : 1,526.51 = 923.95 : x
2. Step 2: Convert to fraction form
   1,019.86/1,526.51 = 923.95/x
3. Step 3: Cross multiply
   1,019.86x = 1,526.51 × 923.95
4. Step 4: Simplify right side
   1,019.86x = 1,410,418.91
5. Step 5: Solve for x
   x = 1,410,418.91/1,019.86
6. Step 6: Final answer
   x = 1,382.95