Finding the Fourth Proportional to 1,488.39, 2,051.15 and 1,090.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.39 : 2,051.15 = 1,090.18 : x
2. Step 2: Convert to fraction form
   1,488.39/2,051.15 = 1,090.18/x
3. Step 3: Cross multiply
   1,488.39x = 2,051.15 × 1,090.18
4. Step 4: Simplify right side
   1,488.39x = 2,236,115.02
5. Step 5: Solve for x
   x = 2,236,115.02/1,488.39
6. Step 6: Final answer
   x = 1,502.37