Finding the Fourth Proportional to 1,386.51, 1,913.34 and 757.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.51 : 1,913.34 = 757.02 : x
2. Step 2: Convert to fraction form
   1,386.51/1,913.34 = 757.02/x
3. Step 3: Cross multiply
   1,386.51x = 1,913.34 × 757.02
4. Step 4: Simplify right side
   1,386.51x = 1,448,436.65
5. Step 5: Solve for x
   x = 1,448,436.65/1,386.51
6. Step 6: Final answer
   x = 1,044.66