Finding the Fourth Proportional to 1,123.18, 1,681.16 and 601.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.18 : 1,681.16 = 601.88 : x
2. Step 2: Convert to fraction form
   1,123.18/1,681.16 = 601.88/x
3. Step 3: Cross multiply
   1,123.18x = 1,681.16 × 601.88
4. Step 4: Simplify right side
   1,123.18x = 1,011,849.68
5. Step 5: Solve for x
   x = 1,011,849.68/1,123.18
6. Step 6: Final answer
   x = 900.88