Finding the Fourth Proportional to 1,111.37, 1,667.20 and 370.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.37 : 1,667.20 = 370.73 : x
2. Step 2: Convert to fraction form
   1,111.37/1,667.20 = 370.73/x
3. Step 3: Cross multiply
   1,111.37x = 1,667.20 × 370.73
4. Step 4: Simplify right side
   1,111.37x = 618,075.61
5. Step 5: Solve for x
   x = 618,075.61/1,111.37
6. Step 6: Final answer
   x = 556.14