Finding the Fourth Proportional to 1,501.49, 2,251.33 and 770.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.49 : 2,251.33 = 770.67 : x
2. Step 2: Convert to fraction form
   1,501.49/2,251.33 = 770.67/x
3. Step 3: Cross multiply
   1,501.49x = 2,251.33 × 770.67
4. Step 4: Simplify right side
   1,501.49x = 1,735,030.56
5. Step 5: Solve for x
   x = 1,735,030.56/1,501.49
6. Step 6: Final answer
   x = 1,155.54