Finding the Fourth Proportional to 1,111.83, 1,534.10 and 669.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.83 : 1,534.10 = 669.76 : x
2. Step 2: Convert to fraction form
   1,111.83/1,534.10 = 669.76/x
3. Step 3: Cross multiply
   1,111.83x = 1,534.10 × 669.76
4. Step 4: Simplify right side
   1,111.83x = 1,027,471.15
5. Step 5: Solve for x
   x = 1,027,471.15/1,111.83
6. Step 6: Final answer
   x = 924.13