Finding the Fourth Proportional to 1,123.14, 1,540.03 and 1,012.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.14 : 1,540.03 = 1,012.17 : x
2. Step 2: Convert to fraction form
   1,123.14/1,540.03 = 1,012.17/x
3. Step 3: Cross multiply
   1,123.14x = 1,540.03 × 1,012.17
4. Step 4: Simplify right side
   1,123.14x = 1,558,769.63
5. Step 5: Solve for x
   x = 1,558,769.63/1,123.14
6. Step 6: Final answer
   x = 1,387.87