Finding the Fourth Proportional to 1,385.86, 1,912.40 and 795.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.86 : 1,912.40 = 795.98 : x
2. Step 2: Convert to fraction form
   1,385.86/1,912.40 = 795.98/x
3. Step 3: Cross multiply
   1,385.86x = 1,912.40 × 795.98
4. Step 4: Simplify right side
   1,385.86x = 1,522,232.15
5. Step 5: Solve for x
   x = 1,522,232.15/1,385.86
6. Step 6: Final answer
   x = 1,098.40