Finding the Fourth Proportional to 1,907.00, 2,615.90 and 1,889.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,907.00 : 2,615.90 = 1,889.72 : x
2. Step 2: Convert to fraction form
   1,907.00/2,615.90 = 1,889.72/x
3. Step 3: Cross multiply
   1,907.00x = 2,615.90 × 1,889.72
4. Step 4: Simplify right side
   1,907.00x = 4,943,310.19
5. Step 5: Solve for x
   x = 4,943,310.19/1,907.00
6. Step 6: Final answer
   x = 2,592.20