Finding the Fourth Proportional to 1,123.13, 1,549.15 and 1,030.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.13 : 1,549.15 = 1,030.19 : x
2. Step 2: Convert to fraction form
   1,123.13/1,549.15 = 1,030.19/x
3. Step 3: Cross multiply
   1,123.13x = 1,549.15 × 1,030.19
4. Step 4: Simplify right side
   1,123.13x = 1,595,908.52
5. Step 5: Solve for x
   x = 1,595,908.52/1,123.13
6. Step 6: Final answer
   x = 1,420.94