Finding the Fourth Proportional to 1,577.34, 2,361.15 and 845.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,577.34 : 2,361.15 = 845.10 : x
2. Step 2: Convert to fraction form
   1,577.34/2,361.15 = 845.10/x
3. Step 3: Cross multiply
   1,577.34x = 2,361.15 × 845.10
4. Step 4: Simplify right side
   1,577.34x = 1,995,407.87
5. Step 5: Solve for x
   x = 1,995,407.87/1,577.34
6. Step 6: Final answer
   x = 1,265.05