Finding the Fourth Proportional to 1,678,994.40, 2,316,944.72 and 915,031.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,994.40 : 2,316,944.72 = 915,031.52 : x
2. Step 2: Convert to fraction form
   1,678,994.40/2,316,944.72 = 915,031.52/x
3. Step 3: Cross multiply
   1,678,994.40x = 2,316,944.72 × 915,031.52
4. Step 4: Simplify right side
   1,678,994.40x = 2,120,077,448,897.57
5. Step 5: Solve for x
   x = 2,120,077,448,897.57/1,678,994.40
6. Step 6: Final answer
   x = 1,262,706.68