Finding the Fourth Proportional to 1,870.21, 2,576.22 and 1,427.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.21 : 2,576.22 = 1,427.34 : x
2. Step 2: Convert to fraction form
   1,870.21/2,576.22 = 1,427.34/x
3. Step 3: Cross multiply
   1,870.21x = 2,576.22 × 1,427.34
4. Step 4: Simplify right side
   1,870.21x = 3,677,146.16
5. Step 5: Solve for x
   x = 3,677,146.16/1,870.21
6. Step 6: Final answer
   x = 1,966.17