Finding the Fourth Proportional to 1,007.30, 1,386.50 and 744.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007.30 : 1,386.50 = 744.86 : x
2. Step 2: Convert to fraction form
   1,007.30/1,386.50 = 744.86/x
3. Step 3: Cross multiply
   1,007.30x = 1,386.50 × 744.86
4. Step 4: Simplify right side
   1,007.30x = 1,032,748.39
5. Step 5: Solve for x
   x = 1,032,748.39/1,007.30
6. Step 6: Final answer
   x = 1,025.26