Finding the Fourth Proportional to 1,075.98, 1,609.89 and 637.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.98 : 1,609.89 = 637.46 : x
2. Step 2: Convert to fraction form
   1,075.98/1,609.89 = 637.46/x
3. Step 3: Cross multiply
   1,075.98x = 1,609.89 × 637.46
4. Step 4: Simplify right side
   1,075.98x = 1,026,242.11
5. Step 5: Solve for x
   x = 1,026,242.11/1,075.98
6. Step 6: Final answer
   x = 953.78