Finding the Fourth Proportional to 1,621.93, 2,429.23 and 1,137.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.93 : 2,429.23 = 1,137.15 : x
2. Step 2: Convert to fraction form
   1,621.93/2,429.23 = 1,137.15/x
3. Step 3: Cross multiply
   1,621.93x = 2,429.23 × 1,137.15
4. Step 4: Simplify right side
   1,621.93x = 2,762,398.89
5. Step 5: Solve for x
   x = 2,762,398.89/1,621.93
6. Step 6: Final answer
   x = 1,703.16