Finding the Fourth Proportional to 1,138.86, 1,570.59 and 746.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138.86 : 1,570.59 = 746.01 : x
2. Step 2: Convert to fraction form
   1,138.86/1,570.59 = 746.01/x
3. Step 3: Cross multiply
   1,138.86x = 1,570.59 × 746.01
4. Step 4: Simplify right side
   1,138.86x = 1,171,675.85
5. Step 5: Solve for x
   x = 1,171,675.85/1,138.86
6. Step 6: Final answer
   x = 1,028.81