Finding the Fourth Proportional to 1,050.86, 1,450.10 and 608.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.86 : 1,450.10 = 608.81 : x
2. Step 2: Convert to fraction form
   1,050.86/1,450.10 = 608.81/x
3. Step 3: Cross multiply
   1,050.86x = 1,450.10 × 608.81
4. Step 4: Simplify right side
   1,050.86x = 882,835.96
5. Step 5: Solve for x
   x = 882,835.96/1,050.86
6. Step 6: Final answer
   x = 840.11