Finding the Fourth Proportional to 1,070.56, 1,604.82 and 376.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,070.56 : 1,604.82 = 376.72 : x
2. Step 2: Convert to fraction form
   1,070.56/1,604.82 = 376.72/x
3. Step 3: Cross multiply
   1,070.56x = 1,604.82 × 376.72
4. Step 4: Simplify right side
   1,070.56x = 604,567.79
5. Step 5: Solve for x
   x = 604,567.79/1,070.56
6. Step 6: Final answer
   x = 564.72