Finding the Fourth Proportional to 3,415.61, 5,123.46 and 1,075.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,415.61 : 5,123.46 = 1,075.56 : x
2. Step 2: Convert to fraction form
   3,415.61/5,123.46 = 1,075.56/x
3. Step 3: Cross multiply
   3,415.61x = 5,123.46 × 1,075.56
4. Step 4: Simplify right side
   3,415.61x = 5,510,588.64
5. Step 5: Solve for x
   x = 5,510,588.64/3,415.61
6. Step 6: Final answer
   x = 1,613.36