Finding the Fourth Proportional to 1,111.95, 1,534.16 and 669.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.95 : 1,534.16 = 669.69 : x
2. Step 2: Convert to fraction form
   1,111.95/1,534.16 = 669.69/x
3. Step 3: Cross multiply
   1,111.95x = 1,534.16 × 669.69
4. Step 4: Simplify right side
   1,111.95x = 1,027,411.61
5. Step 5: Solve for x
   x = 1,027,411.61/1,111.95
6. Step 6: Final answer
   x = 923.97