Finding the Fourth Proportional to 1,907.40, 2,626.38 and 1,435.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,907.40 : 2,626.38 = 1,435.98 : x
2. Step 2: Convert to fraction form
   1,907.40/2,626.38 = 1,435.98/x
3. Step 3: Cross multiply
   1,907.40x = 2,626.38 × 1,435.98
4. Step 4: Simplify right side
   1,907.40x = 3,771,429.15
5. Step 5: Solve for x
   x = 3,771,429.15/1,907.40
6. Step 6: Final answer
   x = 1,977.26