Finding the Fourth Proportional to 1,347,897.72, 1,856,937.60 and 939,258

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347,897.72 : 1,856,937.60 = 939,258 : x
2. Step 2: Convert to fraction form
   1,347,897.72/1,856,937.60 = 939,258/x
3. Step 3: Cross multiply
   1,347,897.72x = 1,856,937.60 × 939,258
4. Step 4: Simplify right side
   1,347,897.72x = 1,744,143,496,300.80
5. Step 5: Solve for x
   x = 1,744,143,496,300.80/1,347,897.72
6. Step 6: Final answer
   x = 1,293,973.18