Finding the Fourth Proportional to 1,870.16, 2,804.32 and 1,090.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.16 : 2,804.32 = 1,090.36 : x
2. Step 2: Convert to fraction form
   1,870.16/2,804.32 = 1,090.36/x
3. Step 3: Cross multiply
   1,870.16x = 2,804.32 × 1,090.36
4. Step 4: Simplify right side
   1,870.16x = 3,057,704.33
5. Step 5: Solve for x
   x = 3,057,704.33/1,870.16
6. Step 6: Final answer
   x = 1,635.00