Finding the Fourth Proportional to 1,445.76, 2,171.52 and 1,059.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.76 : 2,171.52 = 1,059.84 : x
2. Step 2: Convert to fraction form
   1,445.76/2,171.52 = 1,059.84/x
3. Step 3: Cross multiply
   1,445.76x = 2,171.52 × 1,059.84
4. Step 4: Simplify right side
   1,445.76x = 2,301,463.76
5. Step 5: Solve for x
   x = 2,301,463.76/1,445.76
6. Step 6: Final answer
   x = 1,591.87