Finding the Fourth Proportional to 2,403.90, 3,316.86 and 1,564.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.90 : 3,316.86 = 1,564.52 : x
2. Step 2: Convert to fraction form
   2,403.90/3,316.86 = 1,564.52/x
3. Step 3: Cross multiply
   2,403.90x = 3,316.86 × 1,564.52
4. Step 4: Simplify right side
   2,403.90x = 5,189,277.22
5. Step 5: Solve for x
   x = 5,189,277.22/2,403.90
6. Step 6: Final answer
   x = 2,158.69