Finding the Fourth Proportional to 1,381.89, 2,070.72 and 1,033.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.89 : 2,070.72 = 1,033.59 : x
2. Step 2: Convert to fraction form
   1,381.89/2,070.72 = 1,033.59/x
3. Step 3: Cross multiply
   1,381.89x = 2,070.72 × 1,033.59
4. Step 4: Simplify right side
   1,381.89x = 2,140,275.48
5. Step 5: Solve for x
   x = 2,140,275.48/1,381.89
6. Step 6: Final answer
   x = 1,548.80