Finding the Fourth Proportional to 2,147.16, 2,962.50 and 1,307.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.16 : 2,962.50 = 1,307.91 : x
2. Step 2: Convert to fraction form
   2,147.16/2,962.50 = 1,307.91/x
3. Step 3: Cross multiply
   2,147.16x = 2,962.50 × 1,307.91
4. Step 4: Simplify right side
   2,147.16x = 3,874,683.38
5. Step 5: Solve for x
   x = 3,874,683.38/2,147.16
6. Step 6: Final answer
   x = 1,804.56