Finding the Fourth Proportional to 2,152.34, 2,969.69 and 1,312.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.34 : 2,969.69 = 1,312.99 : x
2. Step 2: Convert to fraction form
   2,152.34/2,969.69 = 1,312.99/x
3. Step 3: Cross multiply
   2,152.34x = 2,969.69 × 1,312.99
4. Step 4: Simplify right side
   2,152.34x = 3,899,170.42
5. Step 5: Solve for x
   x = 3,899,170.42/2,152.34
6. Step 6: Final answer
   x = 1,811.59