Finding the Fourth Proportional to 3,762.90, 5,645.30 and 1,915.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,762.90 : 5,645.30 = 1,915.02 : x
2. Step 2: Convert to fraction form
   3,762.90/5,645.30 = 1,915.02/x
3. Step 3: Cross multiply
   3,762.90x = 5,645.30 × 1,915.02
4. Step 4: Simplify right side
   3,762.90x = 10,810,852.83
5. Step 5: Solve for x
   x = 10,810,852.83/3,762.90
6. Step 6: Final answer
   x = 2,873.01