Finding the Fourth Proportional to 1,026.72, 1,539.63 and 377.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,026.72 : 1,539.63 = 377.37 : x
2. Step 2: Convert to fraction form
   1,026.72/1,539.63 = 377.37/x
3. Step 3: Cross multiply
   1,026.72x = 1,539.63 × 377.37
4. Step 4: Simplify right side
   1,026.72x = 581,010.17
5. Step 5: Solve for x
   x = 581,010.17/1,026.72
6. Step 6: Final answer
   x = 565.89