Finding the Fourth Proportional to 2,611.48, 3,914.52 and 1,312.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.48 : 3,914.52 = 1,312.24 : x
2. Step 2: Convert to fraction form
   2,611.48/3,914.52 = 1,312.24/x
3. Step 3: Cross multiply
   2,611.48x = 3,914.52 × 1,312.24
4. Step 4: Simplify right side
   2,611.48x = 5,136,789.72
5. Step 5: Solve for x
   x = 5,136,789.72/2,611.48
6. Step 6: Final answer
   x = 1,967.00