Finding the Fourth Proportional to 2,075.93, 3,114.47 and 905.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.93 : 3,114.47 = 905.72 : x
2. Step 2: Convert to fraction form
   2,075.93/3,114.47 = 905.72/x
3. Step 3: Cross multiply
   2,075.93x = 3,114.47 × 905.72
4. Step 4: Simplify right side
   2,075.93x = 2,820,817.67
5. Step 5: Solve for x
   x = 2,820,817.67/2,075.93
6. Step 6: Final answer
   x = 1,358.82