Finding the Fourth Proportional to 1,335.18, 1,842.72 and 745.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.18 : 1,842.72 = 745.86 : x
2. Step 2: Convert to fraction form
   1,335.18/1,842.72 = 745.86/x
3. Step 3: Cross multiply
   1,335.18x = 1,842.72 × 745.86
4. Step 4: Simplify right side
   1,335.18x = 1,374,411.14
5. Step 5: Solve for x
   x = 1,374,411.14/1,335.18
6. Step 6: Final answer
   x = 1,029.38