Finding the Fourth Proportional to 1,932.79, 2,666.16 and 1,224.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,932.79 : 2,666.16 = 1,224.42 : x
2. Step 2: Convert to fraction form
   1,932.79/2,666.16 = 1,224.42/x
3. Step 3: Cross multiply
   1,932.79x = 2,666.16 × 1,224.42
4. Step 4: Simplify right side
   1,932.79x = 3,264,499.63
5. Step 5: Solve for x
   x = 3,264,499.63/1,932.79
6. Step 6: Final answer
   x = 1,689.01