Finding the Fourth Proportional to 1,015.37, 1,402.00 and 778.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.37 : 1,402.00 = 778.94 : x
2. Step 2: Convert to fraction form
   1,015.37/1,402.00 = 778.94/x
3. Step 3: Cross multiply
   1,015.37x = 1,402.00 × 778.94
4. Step 4: Simplify right side
   1,015.37x = 1,092,076.31
5. Step 5: Solve for x
   x = 1,092,076.31/1,015.37
6. Step 6: Final answer
   x = 1,075.55