Finding the Fourth Proportional to 1,967.32, 2,715.90 and 1,860.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,967.32 : 2,715.90 = 1,860.12 : x
2. Step 2: Convert to fraction form
   1,967.32/2,715.90 = 1,860.12/x
3. Step 3: Cross multiply
   1,967.32x = 2,715.90 × 1,860.12
4. Step 4: Simplify right side
   1,967.32x = 5,051,899.91
5. Step 5: Solve for x
   x = 5,051,899.91/1,967.32
6. Step 6: Final answer
   x = 2,567.91