Finding the Fourth Proportional to 1,045.42, 1,442.72 and 603.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.42 : 1,442.72 = 603.46 : x
2. Step 2: Convert to fraction form
   1,045.42/1,442.72 = 603.46/x
3. Step 3: Cross multiply
   1,045.42x = 1,442.72 × 603.46
4. Step 4: Simplify right side
   1,045.42x = 870,623.81
5. Step 5: Solve for x
   x = 870,623.81/1,045.42
6. Step 6: Final answer
   x = 832.80