Finding the Fourth Proportional to 1,359.28, 1,875.81 and 770.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.28 : 1,875.81 = 770.01 : x
2. Step 2: Convert to fraction form
   1,359.28/1,875.81 = 770.01/x
3. Step 3: Cross multiply
   1,359.28x = 1,875.81 × 770.01
4. Step 4: Simplify right side
   1,359.28x = 1,444,383.98
5. Step 5: Solve for x
   x = 1,444,383.98/1,359.28
6. Step 6: Final answer
   x = 1,062.61