Finding the Fourth Proportional to 1,435.50, 2,151.72 and 654.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.50 : 2,151.72 = 654.93 : x
2. Step 2: Convert to fraction form
   1,435.50/2,151.72 = 654.93/x
3. Step 3: Cross multiply
   1,435.50x = 2,151.72 × 654.93
4. Step 4: Simplify right side
   1,435.50x = 1,409,225.98
5. Step 5: Solve for x
   x = 1,409,225.98/1,435.50
6. Step 6: Final answer
   x = 981.70