Finding the Fourth Proportional to 1,602.56, 2,211.52 and 1,381.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.56 : 2,211.52 = 1,381.12 : x
2. Step 2: Convert to fraction form
   1,602.56/2,211.52 = 1,381.12/x
3. Step 3: Cross multiply
   1,602.56x = 2,211.52 × 1,381.12
4. Step 4: Simplify right side
   1,602.56x = 3,054,374.50
5. Step 5: Solve for x
   x = 3,054,374.50/1,602.56
6. Step 6: Final answer
   x = 1,905.93