Finding the Fourth Proportional to 1,123.08, 1,674.72 and 1,045.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.08 : 1,674.72 = 1,045.16 : x
2. Step 2: Convert to fraction form
   1,123.08/1,674.72 = 1,045.16/x
3. Step 3: Cross multiply
   1,123.08x = 1,674.72 × 1,045.16
4. Step 4: Simplify right side
   1,123.08x = 1,750,357.68
5. Step 5: Solve for x
   x = 1,750,357.68/1,123.08
6. Step 6: Final answer
   x = 1,558.54