Finding the Fourth Proportional to 2,570.93, 3,547.83 and 1,391.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.93 : 3,547.83 = 1,391.99 : x
2. Step 2: Convert to fraction form
   2,570.93/3,547.83 = 1,391.99/x
3. Step 3: Cross multiply
   2,570.93x = 3,547.83 × 1,391.99
4. Step 4: Simplify right side
   2,570.93x = 4,938,552.75
5. Step 5: Solve for x
   x = 4,938,552.75/2,570.93
6. Step 6: Final answer
   x = 1,920.92