Finding the Fourth Proportional to 1,204,152.06, 1,661,748.60 and 660,337.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,204,152.06 : 1,661,748.60 = 660,337.50 : x
2. Step 2: Convert to fraction form
   1,204,152.06/1,661,748.60 = 660,337.50/x
3. Step 3: Cross multiply
   1,204,152.06x = 1,661,748.60 × 660,337.50
4. Step 4: Simplify right side
   1,204,152.06x = 1,097,314,916,152.50
5. Step 5: Solve for x
   x = 1,097,314,916,152.50/1,204,152.06
6. Step 6: Final answer
   x = 911,276.04