Finding the Fourth Proportional to 1,404.10, 2,105.13 and 877.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.10 : 2,105.13 = 877.19 : x
2. Step 2: Convert to fraction form
   1,404.10/2,105.13 = 877.19/x
3. Step 3: Cross multiply
   1,404.10x = 2,105.13 × 877.19
4. Step 4: Simplify right side
   1,404.10x = 1,846,598.98
5. Step 5: Solve for x
   x = 1,846,598.98/1,404.10
6. Step 6: Final answer
   x = 1,315.15