Finding the Fourth Proportional to 1,359.42, 1,875.99 and 770.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.42 : 1,875.99 = 770.07 : x
2. Step 2: Convert to fraction form
   1,359.42/1,875.99 = 770.07/x
3. Step 3: Cross multiply
   1,359.42x = 1,875.99 × 770.07
4. Step 4: Simplify right side
   1,359.42x = 1,444,643.62
5. Step 5: Solve for x
   x = 1,444,643.62/1,359.42
6. Step 6: Final answer
   x = 1,062.69