Finding the Fourth Proportional to 1,071.47, 1,607.34 and 377.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.47 : 1,607.34 = 377.98 : x
2. Step 2: Convert to fraction form
   1,071.47/1,607.34 = 377.98/x
3. Step 3: Cross multiply
   1,071.47x = 1,607.34 × 377.98
4. Step 4: Simplify right side
   1,071.47x = 607,542.37
5. Step 5: Solve for x
   x = 607,542.37/1,071.47
6. Step 6: Final answer
   x = 567.02