Finding the Fourth Proportional to 1,354.55, 1,870.15 and 1,106.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.55 : 1,870.15 = 1,106.47 : x
2. Step 2: Convert to fraction form
   1,354.55/1,870.15 = 1,106.47/x
3. Step 3: Cross multiply
   1,354.55x = 1,870.15 × 1,106.47
4. Step 4: Simplify right side
   1,354.55x = 2,069,255.52
5. Step 5: Solve for x
   x = 2,069,255.52/1,354.55
6. Step 6: Final answer
   x = 1,527.63