Finding the Fourth Proportional to 1,870.76, 2,805.32 and 571.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.76 : 2,805.32 = 571.94 : x
2. Step 2: Convert to fraction form
   1,870.76/2,805.32 = 571.94/x
3. Step 3: Cross multiply
   1,870.76x = 2,805.32 × 571.94
4. Step 4: Simplify right side
   1,870.76x = 1,604,474.72
5. Step 5: Solve for x
   x = 1,604,474.72/1,870.76
6. Step 6: Final answer
   x = 857.66