Finding the Fourth Proportional to 1,201,980.81, 1,658,733.72 and 658,150.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201,980.81 : 1,658,733.72 = 658,150.30 : x
2. Step 2: Convert to fraction form
   1,201,980.81/1,658,733.72 = 658,150.30/x
3. Step 3: Cross multiply
   1,201,980.81x = 1,658,733.72 × 658,150.30
4. Step 4: Simplify right side
   1,201,980.81x = 1,091,696,087,144.45
5. Step 5: Solve for x
   x = 1,091,696,087,144.45/1,201,980.81
6. Step 6: Final answer
   x = 908,247.52