Finding the Fourth Proportional to 1,885.32, 2,602.80 and 1,296.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.32 : 2,602.80 = 1,296.72 : x
2. Step 2: Convert to fraction form
   1,885.32/2,602.80 = 1,296.72/x
3. Step 3: Cross multiply
   1,885.32x = 2,602.80 × 1,296.72
4. Step 4: Simplify right side
   1,885.32x = 3,375,102.82
5. Step 5: Solve for x
   x = 3,375,102.82/1,885.32
6. Step 6: Final answer
   x = 1,790.20