Finding the Fourth Proportional to 1,870.56, 2,804.22 and 715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.56 : 2,804.22 = 715.50 : x
2. Step 2: Convert to fraction form
   1,870.56/2,804.22 = 715.50/x
3. Step 3: Cross multiply
   1,870.56x = 2,804.22 × 715.50
4. Step 4: Simplify right side
   1,870.56x = 2,006,419.41
5. Step 5: Solve for x
   x = 2,006,419.41/1,870.56
6. Step 6: Final answer
   x = 1,072.63