Finding the Fourth Proportional to 2,152.95, 2,971.34 and 1,313.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.95 : 2,971.34 = 1,313.91 : x
2. Step 2: Convert to fraction form
   2,152.95/2,971.34 = 1,313.91/x
3. Step 3: Cross multiply
   2,152.95x = 2,971.34 × 1,313.91
4. Step 4: Simplify right side
   2,152.95x = 3,904,073.34
5. Step 5: Solve for x
   x = 3,904,073.34/2,152.95
6. Step 6: Final answer
   x = 1,813.36