Finding the Fourth Proportional to 1,392.04, 1,921.01 and 762.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.04 : 1,921.01 = 762.59 : x
2. Step 2: Convert to fraction form
   1,392.04/1,921.01 = 762.59/x
3. Step 3: Cross multiply
   1,392.04x = 1,921.01 × 762.59
4. Step 4: Simplify right side
   1,392.04x = 1,464,943.95
5. Step 5: Solve for x
   x = 1,464,943.95/1,392.04
6. Step 6: Final answer
   x = 1,052.37