Finding the Fourth Proportional to 1,053,577.47, 1,453,780.50 and 639,898.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053,577.47 : 1,453,780.50 = 639,898.98 : x
2. Step 2: Convert to fraction form
   1,053,577.47/1,453,780.50 = 639,898.98/x
3. Step 3: Cross multiply
   1,053,577.47x = 1,453,780.50 × 639,898.98
4. Step 4: Simplify right side
   1,053,577.47x = 930,272,659,093.89
5. Step 5: Solve for x
   x = 930,272,659,093.89/1,053,577.47
6. Step 6: Final answer
   x = 882,965.60