Finding the Fourth Proportional to 2,969.63, 4,453.32 and 1,213.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,969.63 : 4,453.32 = 1,213.70 : x
2. Step 2: Convert to fraction form
   2,969.63/4,453.32 = 1,213.70/x
3. Step 3: Cross multiply
   2,969.63x = 4,453.32 × 1,213.70
4. Step 4: Simplify right side
   2,969.63x = 5,404,976.77
5. Step 5: Solve for x
   x = 5,404,976.77/2,969.63
6. Step 6: Final answer
   x = 1,820.09