Finding the Fourth Proportional to 1,381.59, 2,071.04 and 1,260.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.59 : 2,071.04 = 1,260.09 : x
2. Step 2: Convert to fraction form
   1,381.59/2,071.04 = 1,260.09/x
3. Step 3: Cross multiply
   1,381.59x = 2,071.04 × 1,260.09
4. Step 4: Simplify right side
   1,381.59x = 2,609,690.49
5. Step 5: Solve for x
   x = 2,609,690.49/1,381.59
6. Step 6: Final answer
   x = 1,888.90